If you are looking for one this is nice.
Pen Pouch Diabetic Travel Case - eBay (item 130332361968 end time Jan-18-10 11:00:48 PST)
This seller has several different types of cases - and pillboxes for storing carts. I believe she ships international too.
Not spam - just me, bored and browsing Ebay. I thought some people here might appreciate the link.