Theory11 - Tom Elderfield - Topper
Make text on the top of a card box appear, disappear, and morph! Visual and practical.
You are taught a few, cool ideas with the gimmick, including routines.
It is also a very clean trick as nothing is added,or palmed off, yet you can show the box all around on the outside and the inside!
The gimmick can be made very easily and cheaply, and is SO easy to perform!