Level: 55 Age: 66d, 8h, 30min and 51s

Along with purses in chests, it would be fun to have piggy banks. They would
only accept 'crap money' (silver or less valuable) but they would not take a
chest slot in the room. You would have to set the piggy bank with a time limit
- 30 days minimum. Throw in your spare change there, instead!
Once the time had gone, you'd be able to open it ONCE. During the set period,
you can't see how much money you have there.
It would of course be extra cool if you had to take the piggy to the bank (it
would be kinda magical, so it would be max 50 kg or so?) to empty it, and
TA-DAA, a determined moneysaver will notice 100k on his account...
Additionally, the piggy could remind you with tells: "Don't forget to save -
like the old Swedish proverb says 'Den som spar, han har' so bring me those
coins!!!"
And least, but not last, a frustrated or desperate owner could simply 'crush
piggy'. Need I say more?