The idea starts from the great Inflatable Bubble Hotel, and also from the classic ships inside the bottle. In this case the bottle will be replaced with a piggy bank.
The idea is simple, the use of a moneybox (Berliner Sparkasse) makes the things you want become possible.
I propose that these large inflatable moneybox, to be used for children's playgrounds, relaxing islands for adults...etc. (also for various artistic activities).
There may be some unconventional posters with real moneybox with transparent glass, which are visible on both sides of the poster. And inside them to be different objects, depending on the message to be transmitted (a painting - to support artists, etc.) The moneybox can have lights inside to be visible also at night.
pics are for layout