Vaja makes some pretty awesome carrying cases for various PDAs. Just ask Marc over at iPAQabilities.com and he’ll start singing their praises.
Now, you can also get cases to carry your SD, MMC and MS storage cards. The i-Volution line offers two cases: One to carry 2 SD / MMC cards, the other to carry 4 SD cards. In the classic line, 3 cases are offered with capacity for 6 SD cards, 4 MS and 2 SD cards or 6 MS cards.
Prices range from $29.90 USD to $39.90 USD.