I'd appreciate some feedback from people that have tried this effect. It’s a good effect in itself but I guess it has the potential to become much more spectacular
Hi greenbelter. Personally I think you may be in danger of overthhinking this one.
It sounds to me like it is a rather nice reveal in impossible place of a previously vanished coin/ring. So why strive to make it stronger? Simply put it works. The signed coin (they do sign the coin right?) is vanished. Well thats magic for a start, but when it appears almost instantly in a box in a box in a box etc., well that is pretty impressive to an audience.
By putting ity then into a ball of wool, or a lemon imho I think you are just over complicating it for the audience. Sure stick it in a lemon instead of you like, but not as well as. The audience is just going to remember it was in an impossible place anyway...
just my thoughts