In reply to Sean_J:
> Plus, making stuff is fun!
Got zero opinion on the environmental issues here, but I can second this bit.
Given some basic sewing skills, chalkbags are a fairly easy project, and since they're small, it's easy to make them out of bits of fabric (and velcro, webbing, etc.) salvaged from worn out clothes. Or if you're feeling really flush, you could splash out on some remnants from a fabric shop -- one of my better expenditures was a fiver on a discontinued sample book from an upholstery shop, which I'm still working my way through.
One chalkbag started as a moth-eaten sweater -- I boiled it in the washing-machine until it turned into felt, then used that.
Like any other pastime, it's not going to be everyone's idea of fun, but if you like the idea of upcycling things or making your own, it's very do-able.