Is there a viable Photos alternative? I was thinking of setting up a NAS on my RPi but it would need to be for other family members too.

What? You have enough for groceries after paying the bills?

Sometimes, when I’m not in a rush I go full chaotic good and use my trolley key to release a load of them. I like to pay back from the times in the past when I didn’t have a coin handy.

Cs-137 and other fission and activation products can be largely removed by treatment. H-3 is a bit trickier since it literally is part of the water. Luckily it’s a fairly weak beta emitter with a relatively short half life so causes very, very little long term harm.