Ya'all have more money than I do.
Imo if you want something small then why not just add
longer strings to a stuff bag and tie them to the bottom
corners of that bag? If you are only using this as a carry
along secondary bag then odd's are you will not be
putting much more than 5-10lbs max and the string straps
should not be an issue. If you do find them uncomfortable
then why not thread on a couple pc's of tubular webbing to
spread the load. Many times you can find these bags as
promotional giveaways.
OR buy a mesh bag of the size you like and tie or sew on
a single long string or web strap and carry it like a shoulder
messenger bag.