I would find a neighbor or family member with some woodworking skills, but it's not really that hard depending on how you want the case to look. Attached are a couple I've made, once I had the pieces cut. The stained one required some router work, the black one did not. There are felt pads on the underside, and it really helps to have finger grooves routered into the lower outside edges. I had to have someone else with a table saw cut the pieces for me, to get straight cuts, then once done it was just nails from there. I also relied on a friend for the router work. There's somebody in Kentucky who makes and sells them, I don't know if he makes Kenmore boxes though.
I have a retired neighbor who is a craftsman and the first one I "helped" (i.e. watched) him make he mitered the corners and it looked great. I stained that one and then finished it with spray lacquer, it went away with a machine I sold.