Hi
sounds silly but...
I found there is a nice hole next to the battery under the cover (on left side) which easily fit 2 spare mini SD cards safely
just a tip, I find it handy, tho I prefer to have one big card than several little ones
you could put a big 4gb card in the main slot then carry the 126mB standard one in the spare slot as a back up in case if youre taking pictures and run out of space cos your card is full of music and movies (easy to do)
hmm, what else can go in that hole next to the batter? spare earphone foams?
worth thinking about