Magic Tricks

This is a pretty nice effect. The gimmicks are reliable, and they actually do hold up to moderate scrutiny, even though you don't end up clean, despite what the demo video claims.

It's very easy to do... no sleights required. The only problem is that these things look like magic props. There's nothing organic about them. This draws attention and suspicion, and even though they can be examined a bit, like I said, you do not end clean. A spectator is going to look at items like this and automatically assume there's some sort of gimmick involved.

A similar effect is CAPtivated. It's the same sort of effect where an item appears to change, it uses a similar type of gaff, but the difference is that bottle caps ARE a very common, natural item, which adds to the magic, and in that routine, you do end totally clean. Also, the change can happen in the spectator's hand, which is always a bonus.
Plus it's a whole lot cheaper. So if you like the general idea of this routine, I'd take a look a CAPtivated first before pulling the trigger on this one.