Steve, I was following your lamp builds for some time and watched your business and quality improve over time. The Mini lamp was going to be my suggestion for the 4 cylinder people (Honda-Toyota etc.) so that might also be a better choice for a kids room, less likely to fall over and hurt something.
My next suggestion is to get a Patent for these. It may seem silly, but if you ever watched the TV show Shark Tank, many a small business started with an idea. If somebody with more help and a larger shop, could turn these out faster and cheaper, you might not have enough friends to keep this business afloat. Good luck with this and I hope it expands into a business that maybe will be your dream job.