As other reviewers have noted, the "no elastics/no invisible thread" claims are, to be extremely
charitable, technically accurate in a nitpicky semantic sense, but highly misleading. As is the
trailer, from which you might not guess you need to hold the gimmick visibly (albeit concealed in an
ordinary object) mere inches from the effect you're producing —— effects you could get more
elegantly and reliably by other methods. Throwing this one in the drawer on the off chance I come
up with some use for it, but after fiddling with it for an hour with erratic results (again,
inferior to other methods even when it works) I can't say I expect to ever try this one in front of
other people. The gimmick is, indeed, somewhat ingenious. But so are Rube Goldberg devices——that
doesn't make them (or this) remotely practical.