I've set out the goal of making 10 stuffed bags to send to Chriss for this month, and to that end, I went to a local discount store that happens to have a big "travel size" section. Now, I don't think this was the best deal around...most of the items were right around $1. Even so, however, buying everything on the list for 5 general male bags and 5 general female bags (plus some items for myself) I only spent $40. I also was able to score a box of 300 q-tips for about $3, meaning basically that the amount of q-tips I put in each of my bags will be very very cheap.
If you can find deals at places like The Dollar Tree or even warehouse type stores like Sams, you could probably get away with an average of UNDER $4/bag. That is to say that if each of us spent $4 a month on a bag and let's say $4 to ship the bag to Chriss, we'd be able to accumulate bags pretty quickly with each of us spending $10 or less.
Just a thought.