It isn't about the size. I only suggested the 8" x 10" as a general idea. if you have a large item then use the right size box or bag to send it. I just wanted to express that one person shouldn't send 50 items and another only send one item. so when you are sending remember this is a small swap and so the items you send should be inexpensive or handmade.
For example I might send a quilt mag I've had a while and a bag of candy. You could throw in one or two small htings also like maybe pkg of cocoa and a measuring tape.
Just use common sense if you are sending something other than or adding to one handmade item. Don't go overboard on the number of items in one swap.
One handmade item is just fine with no extras. This is meant to be a fun time and not a contest to see who can send more. That hasn't happened here but I've seen it happen in other swaps.
I don't want to put restrictions on this.