[mst]

I know several who I believe would be fine with it, all of whom I see regularly, usually down our usual pub, and all of whom would I suspect be happy to do an update at least every couple months in return for me buying them a few drinks for the hassle.

I already have multiple friends who have copies of my house key held in case something really stupid happens, none of whom found that weird and all of whom I'm willing to trust enough that I believe the risk of having multiple such copies extant but unmarked is significantly less than the risk of not having that fallback plan.

In fact, they all considered "being one of the spare key holders" to be an honour more than anything else.

I am very much aware that there are many people whose situations are very different than mine, but it works for me (and they're all wonderful people for whose existence I try to be appropriately grateful.)