Foreign currency

after going overseas i still have foreign currency
lying around, the good thing is u can give away
your coins to unicef on the plane. However the
notes are ghey, like, wat am i suppose to do
with the notes. I think ive decided to collect
the notes and use them when im overseas again.
I just have to not lose them between the next time
i go overseas, 100 pounds is quite a bit, but
$20 singapore isnt much. My favourite currency,
is guilders. I like the name , plus, u can pick
up exciting and tasty products using guilders, and
they're colourful notes takes the seriousness
out of money. Unlike say US currency which all looks
the same. Oh and the other day i saw someone buy
monopoly, im surprised anyone is still buying
that gane, i mean doesnt everyone already own
a copy?