Heya, lets take a break from learning and have some fun!
Can you see the hidden image? (this one kinda hurt my eyes xD)
https://www.brainbashers.com/what.asp
Can your find the C?
https://www.brainbashers.com/canyoufind.asp
Let the computer guess your card!
https://www.brainbashers.com/pickacard.asp
Can your get through these 20 levels?
https://www.brainbashers.com/twenty.asp
Couldn't think of anymore, maybe I'll add some later lol.