secret formula that will allow you to remember things better -- and not just in magic

which has my highest recommendation

A simple toy with colored spots on each side is placed inside a box by the spectator and you can name the color every time

and downloadable video instructions

First of all

I Dream of Mindreading | John Lovick Oberon secret formula that will allowYou explain you're going to do the world's greatest mathematical card trick. A spectator thinks of any card in the deck. You hand her a deck, and while your back is turned the spectator transfers a few cards from the top to the bottom, as instructed by you depending on the card's value. You take the deck, look through it, and announce the thought of card. The audience is only mildly impressed because the trick obviously involves some sort of stack or