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A very similar solution like 'Elapsed's.

PowerTRC LED Programmable Message Fan W/custom Drawing - USB Powered (Blue Led)

I remembered that i got one similar to the picture, once i read Elapsed answer. Thanks!

Also you can look at different types if you want more cooling performance: https://www.amazon.com/gp/aw/s/ref=is_s?k=usb+fan!

P.S: I didn't tried but to increase cooldown you can wrap power adapter with aluminium foil (tinfoil). I think you should wrap it firmly by using Thermal paste. This way almost every surface of foil should be in contact with PSU. And that way notebook adapter can transfer its heat to aluminium.

CAUTION: If wrapping isn't firm; you cause your power supply unit to overheat because of blocked air current and very hot air pockets between tinfoil and adapter surface. So you need to try out a small piece of aluminium foil by applying it on adapter with the paste. if thermal paste made for CPU's will glue the tinfoil to the PSU's surface and keep it glued for a very long time, there will be no problem.

Complete the wrapping without cutting tinfoil. There should be an extra tinfoil as long as your fan's diameter. Direct your fan to this extra tinfoil and this SHOULD happen: PSU will transfer heat to tinfoil. Fan's air curent will cool down PSU faster because more air current will be in touch with more heated surface.

I know lots of 'if's, but maybe someone out there has both time and curiosity.

A very similar solution like 'Elapsed's.

PowerTRC LED Programmable Message Fan W/custom Drawing - USB Powered (Blue Led)

I remembered that i got one similar to the picture, once i read Elapsed answer. Thanks!

Also you can look at different types if you want more cooling performance: https://www.amazon.com/gp/aw/s/ref=is_s?k=usb+fan!

P.S: To increase cool down, try LSerni's method below in comment section. Disregard this: I didn't tried but to increase cooldown you can wrap power adapter with aluminium foil (tinfoil). I think you should wrap it firmly by using Thermal paste. This way almost every surface of foil should be in contact with PSU. And that way notebook adapter can transfer its heat to aluminium.

I know lots of 'if's, but maybe someone out there has both time and curiosity.

A very similar solution like 'Elapsed's.

PowerTRC LED Programmable Message Fan W/custom Drawing - USB Powered (Blue Led)

I remembered that i got one similar to the picture, once i read Elapsed answer. Thanks!

Also you can look at different types if you want more cooling performance: https://www.amazon.com/gp/aw/s/ref=is_s?k=usb+fan!

P.S: I didn't tried but to increase cooldown you can wrap power adapter with aluminium foil (tinfoil). I think you should wrap it firmly so almost every surface of foil should be in contact with PSU. That way notebook adapter can transfer it's heat to aluminium. CAUTION: If wrapping isn't firm; you cause your power supply unit to overheat because of blocked air current and very hot air pockets between tinfoil and adapter surface.

Complete the wrapping without cutting tinfoil. There should be an extra tinfoil as long as your fan's diameter. Direct your fan to this extra tinfoil and this SHOULD happen: PSU will transfer heat to tinfoil. Fan's air curent will cool down PSU faster because more air current will be in touch with more heated surface.

A very similar solution like 'Elapsed's.

PowerTRC LED Programmable Message Fan W/custom Drawing - USB Powered (Blue Led)

I remembered that i got one similar to the picture, once i read Elapsed answer. Thanks!

Also you can look at different types if you want more cooling performance: https://www.amazon.com/gp/aw/s/ref=is_s?k=usb+fan!

P.S: I didn't tried but to increase cooldown you can wrap power adapter with aluminium foil (tinfoil). I think you should wrap it firmly by using Thermal paste. This way almost every surface of foil should be in contact with PSU. And that way notebook adapter can transfer its heat to aluminium. 

CAUTION: If wrapping isn't firm; you cause your power supply unit to overheat because of blocked air current and very hot air pockets between tinfoil and adapter surface. So you need to try out a small piece of aluminium foil by applying it on adapter with the paste. if thermal paste made for CPU's will glue the tinfoil to the PSU's surface and keep it glued for a very long time, there will be no problem.

Complete the wrapping without cutting tinfoil. There should be an extra tinfoil as long as your fan's diameter. Direct your fan to this extra tinfoil and this SHOULD happen: PSU will transfer heat to tinfoil. Fan's air curent will cool down PSU faster because more air current will be in touch with more heated surface.

I know lots of 'if's, but maybe someone out there has both time and curiosity.

A very similar solution like 'Elapsed's.

PowerTRC LED Programmable Message Fan W/custom Drawing - USB Powered (Blue Led)

I remembered that i got one similar to the picture, once i read Elapsed answer. Thanks!

Also you can look at different types if you want more cooling performance: https://www.amazon.com/gp/aw/s/ref=is_s?k=usb+fan!

P.S: I didn't tried but to increase cooldown you can wrap power adapter with aluminium foil (tinfoil). I think you should wrap it firmly so almost every surface of foil should be in contact with PSU. That way notebook adapter can transfer it's heat to aluminium. If not you cause your power supply unit to overheat because of blocked air current and very hot air pockets between tinfoil and adapter surface.

Complete the wrapping without cutting tinfoil. There should be an extra tinfoil as long as your fan's diameter. Direct your fan to this extra tinfoil and this SHOULD happen: PSU will transfer heat to tinfoil. Fan's air curent will cool down PSU faster because more air current will be in touch with more heated surface.

A very similar solution like 'Elapsed's.

PowerTRC LED Programmable Message Fan W/custom Drawing - USB Powered (Blue Led)

I remembered that i got one similar to the picture, once i read Elapsed answer. Thanks!

Also you can look at different types if you want more cooling performance: https://www.amazon.com/gp/aw/s/ref=is_s?k=usb+fan!

P.S: I didn't tried but to increase cooldown you can wrap power adapter with aluminium foil (tinfoil). I think you should wrap it firmly so almost every surface of foil should be in contact with PSU. That way notebook adapter can transfer it's heat to aluminium. CAUTION: If wrapping isn't firm; you cause your power supply unit to overheat because of blocked air current and very hot air pockets between tinfoil and adapter surface.

Complete the wrapping without cutting tinfoil. There should be an extra tinfoil as long as your fan's diameter. Direct your fan to this extra tinfoil and this SHOULD happen: PSU will transfer heat to tinfoil. Fan's air curent will cool down PSU faster because more air current will be in touch with more heated surface.