I know the second I post this I am gonna think of something but here goes anyway. I have an effect in mind but it's quite short and I want to extend it and make it that bit more... confusing (not sure if that's the right word). To do this I have an idea where I could include an audience member having a choice of four possible options. And I need to force one, the only ideas I have is magicians choice (i think the proper name is equivocation), and some sort of switch. But I want some more extravagant, else the effect will kinda just look like a force just done a few different ways than a switch to reveal. Another idea is (not sure where its from) using four-different-coloured m&ms (multiple m&ms but just four colours) and - without going into detail - I use a fake thumb to collect what I pour in and they choose without looking. Just wondered what other options there are they I can't think about right now, I know I have Karl Fulves book on mental magic so I might skim through that if I find it. (Also I would prefer it to be free online resources - you can reply in thread or pm me) -I tried to think of a way to include an out but there is probably only one way and that will make the effect predominantly harder to perform. -I didn't highlight it but I don't want to use playing cards. TLDR: I need an effect where I can FORCE the spectate to pick an option out of four possibilities.