From my sewing room...
Name in progress- a true classic diaper bag
This diaper bag is using the small figures Mothers of the World fabric with a navy blue faux suede upholstery fabric. The dimensions are 15"X10"X6" (WidethXHeightXDepth). The diaper bag has 2 pockets on either end for a sippy cup or water bottle. One side as a detachable changing pad, removable with hook and loop fastening. The top will have a zipper. The inside will be lined with a few pockets and 2 sections.
The proto type in the photos has craft weight stabilizer for structure, I will probably not keep this much structure in other bags I make. The fabric is very thick and the seams are not as I would like. I use heavy weight stabilizer in my structured bags and it seems to do the best for retention of shape. The proto type also has just a shoulder strap, non-adjustable, I will likely add handles and possible an adjustable shoulder strap.
The little bag in the right hand photo is another proto type. I don't even have a name for it yet. The dimensions are 7"x4.5"X3 It is a simple, small "cosmetic" type bag with a zipper closure.
I expect to price it around $90 for the diaper bag, includes attached changing pad.