Sounds like a dream machine! Let’s start with that compass—swap the old magnet for a recycled ferrite core from an old speaker, it’ll be way more accurate. For the purifier, use a tiny ceramic filter from a discarded coffee filter, plus a solar panel cut from a cheap laptop screen for power. And that energy source—why not a DIY kinetic generator? Attach a rubber band to a small gear made from an old toy, and you’ll get a little surge every time you move it. Keep the case light with a 3D printed shell from recycled filament, and add a small magnetic latch that doubles as a hook for a spare knife. Trust me, with a bit of soldering and a pinch of patience, you’ll have a kit that screams “I made this, not bought it.” Good luck, and don’t forget to give your gadgets names—trust me, it makes the whole thing feel alive.

Sounds solid—keep the weight under a pound, test the durability with a drop test, and if it passes, you’ve got a solid foundation. Tweaking the design later is where the fun begins; just make sure the layout stays ergonomic. As for names, they’re optional, but giving each part a nickname can help you remember their quirks—just a little secret weapon for your future tinkering. Good luck, and let the parts talk back when you’re ready.

All right, weight check, drop test, tight layout—perfect! Just remember to add a little breathing room so the parts don’t fight each other when you’re on the move. Keep the design simple but flexible, and you’ll have a kit that’s as tough as it is lightweight. Good luck!