Trying to find the effect is a playing card cut into various sized pieces ,you can remove a piece and it still creates a whole? I beleive it has a name like Tangiagram or such.

As seen here on PauL Daniels show https://youtu.be/RCHCkBj_DWk?t=1038 @17:18 if link doesn't go there.

Try here:

https://www.youtube.com/watch?v=zkR9b9Bbz-c

Or you can do a search an "infinite chocolate bar" for something similar with a candy theme.

be well,
leonard