"Weak wrists but can manage this easily"
At home I normally use an electric can opener, but realised that New Zealand camper vans were unlikely to have these as standard! So I spent ages in the Harrogate store with a lovely assistant who was endlessly patient and also determined that I was going to leave with the right opener for me. I have reduced grip and strength in both hands and wrists and can't use most openers, but this looked the best in store for me. I got home and used it several times before I went away and coped with it perfectly. Ironically in 6 weeks of touring NZ, I didn't by any tins at all!