I've got some Cuban tourist pesos. About £1 worth. Or the equivalent of a packet of Cuban cigarettes.
I also have 30 euros I put in a safe place. Can't quite remember where, which is annoying as I am in Berlin next week.
US dollars, South African Rand, Singapore dollars, Indonesian Rupiah, Danish Kroner, Philippine pesos, Korean won, Kenyan Shiligi, Hong Kong dollars, Vietnamese dong, Chinese Yuan and Belgium francs. There are others but I've not got them with me at the moment!!!!!!!!!!!!
The big old 5p coins (before they became the big new 5p coins, and before they became the small new 5p coins ) were the exact size of a German deutschmark; great for using in fag machines, drink machines, phone boxes etc. and all for a fraction of the price.