Gorilla tape. It sticks more than you want. Epoxy, fast and slow. Test probe leads,,,the little tap that will pierce a wire has saved me a lot of time and trouble. Fireproof lock box for important papers (although now we can download our medical info - history, meds, even MRI data when we need help out of area). If you use wifi, get an extender. Our present camp signal is at 52 percent, the extender brings it up to 100 percent. Some STRONG 6X6 blocks to put under jacks in soft areas.
AND don,t forget bird feeders, squirrel feeders, humming bird food and feeders, geranium plants to help hold down the awning, party lights, a swing settee, extra cat litter boxes, a good printer/fax/copier, and lots of patience.
3126B Cat pushing 38' Harney Renegade. 2000 Civic toad. Retired submarine captain, 36 years Navy. Homeport is Black Hills SD.