While this is Mom’s UCAB, I tested it on my travel sewing machine bag to see if it would work for me. The key is to adjust the back sleeve to fit over your rolly bag handle. I have no idea if there are standard sizes for those, so make sure you check before you sew everything to the exterior.
I plan to put my smaller items in the UCAB. I am not sure how I am going to reconcile this bag with the Tupperware box.
The picture below shows the bag empty, but trust me when I say I filled it up. It isn’t completely filled.
I need mine to contain all my to go items – notions and rulers, etc. I put them in the various pockets of the sewing machine bag, which has a lot of pockets, but it makes some of the zippers hard to open.