I think my favortite illusion is this thing where you look at some dots, blink while looking at your wall, and it looks like Jesus. if you just type see Jesus illusion in youtube it should probably come up

There Is One Where If U Start At The Middle Of The Red Dot In The Hypnotize Illusion And U Look At Ur Walls Or At The Floor Its Like Everythings Shrinking And Ur Levitating(its really cool)