Gene-editing tattoos on skin

Develop a gene editing pad that could be laid on the skin. It would then edit the genes of the skin in a pattern of the person's choice, either a picture or letters. It would work by turning on and off the melanin levels in each "pixel" of skin so that the tattoo/picture would appear.

Probably not the right terminology or use of the technology at this point but it might be a neat use of it in the future!

Dog bark tracker

Use an inexpensive phone or small computer board like the Raspberry Pi to build a dog bark tracker.

That way you can keep track of all the annoying barking happening in the neighborhood and share it on a homeowners association website or with neighbors to show the impact of their dog on you and your family as well as on the neighborhood.

Suvival stick made of PVC pipe

You could make a walking stick out of PVC pipe with a rubber foot, wrap it with paracord so you have rope with you wherever you go, then fill the stick with survival stuff like first aid, band-aids, duct tape folded up, moleskin for blisters, snacks like Slim Jims, a couple of single-serve gatorade mix packs, maybe a survival straw for filtering water, a glow stick or small flashlight, and that sort of thing.

You could even do this with a short wide piece of PVC pipe for the trunk of your car or your toolbox. It would take up very little space and keep everything in one place. Convenient!

Flashcard prayer list

Use flashcards for your prayer "list". That way you can rotate through them easily, pray for a few at a time, and maybe even keep notes a little easier.

If you could put prayer requests in a text file you could use flashcard app to go through them over and over. And show how much you prayed for someone or something.

Could help with your relationship with God!