I have been out of the profession for a good long while, but I work at a psychiatric hospital and have done a few hospital wide shows for the patients and staff. I don't perform for money anymore (anxiety disorder that only raises it's ugly head if there's money on the line.)
But I have been doing shows again, and I often do close up for the patients. And I've found myself impulse buying tricks again, which I haven't done in about fifteen years.
To cut the story short, I'm looking for magic that can fit with a therapeutic presentation. Maybe about becoming whole, recovering what was lost, something related to the shared community of the hospital.
A friend of mine once had a trick, I think it was called miracle puzzle. It was one of those puzzles with a variety of shapes stuck to a board formed in a square with a frame around it and then the pieces are reassembled to fit the extra piece while still adding the frame around the shapes. I have a great presentation for it. What little shopping around I've done was for a sold out item that cost over 600 dollars. Now, because I'm not doing shows for money anymore I can't afford to buy a pre-made prop. I don't even need it to be sophisticated, preferably with all the pieces in different colors and shapes. If anyone can guide me to a cheap alternative or perhaps building instructions.
That's one I'm seeking in particular but I'm looking for something inspiring as a send off at the end of the show. I might be able to get the hospital to pay for supplies and the maintenance shop has a woodworking station.

But any meaningful presentation for a trick would be appreciated. Not sure if I'm posting this in the right forum. Please move if in the wrong place.

Tenyo has a clever version for closeup.

Just the geometric vanish on a rectangular assembly ... lots of places to show you the outline (what shapes) and some have used that with playing cards

For reference, the book Mathematics, Magic and Mystery by Martin Gardner has two chapters (7 and 8) on the topic.