One of those really nice ceramic money pots that you put coins in but can't get them out, you wait until the pot is full and then break it.
I left my purse in reach and DS (2.11) has put ALL of my money in his pot! Only about £8 in change but this was literally all the money in the flat!
I need cash to get the bus to work / nursery tomorrow. So - do I smash it, or go to the cash point at the local shop any pay £1.75 to take a tenner out of my own account? (The shop doesn't do cash-back and the nearest free cash point is not in walking distance - I'd have to get the bus
).
Obviously I'd keep all the coins saved so far in another jar or something.