I think it's great that you are working with kids and donating your time to teach youngsters good things. I once made rod wrapping stands for a Venture troop and we made fly rods that the components had been donated. Gives you a good feeling doing things like that.
Have you thought about selling thise kits? I think there would be a market for it. Thanks for sharing! I Have been wondering about how to make a vise, I am a DIY minded person. I had been thinking of a way to monut a pair of needle nose vise grips to use as a tying vise.