Aqua:
Where I live we're into recycling and conservation. I buy cloth tote bags at thrift shops, and take 2 or 3 with me to the grocery store
--instead of landfill destined plastics.
Anyway, my point is, they'd make a good at home sewing project. If you contact an upholsterer or drapery maker perhaps they'll give you leftover yardage.
Could you; make up a bunch and set up a card table outside the grocery store and hit up the shoppers on the way in -- if the mgr. of the store would permit it, of course.
I also use one bag as a designated library book bag. (From Harrod's but who's namedropping? ;-) I keep my library card in the pocket. At home ALL library books go in and out of the bag--none left laying around except the one I'm reading.
What I'm working on right now -- it's probably not a money-maker, but ??? The SPCA likes to give its transient animals their own "blankie" pads -- which they can take with them to a new adoptive home. The animals are comforted by their own scent. I got donated fabric -- took apart an old comforter for padding, and roughly sew them up -- quite crudely, in fact, but the animals probably won't care... The main point is there's no overhead in materials.
Joan