I've been told that when I get an appropriate wooden box for storing black powder containers that this box will have to be chained down to at least make an additional gesture towards security.

I know people will often attach a chain to the padlock that can lock the box, so my question is what would you attach the other end of the chain to ?

I'm thinking about something like a Eye bolt chemically anchored into the wall, and then another padlock to attach the chain to bolt.

I could use something like a staple from a hasp set but the bolt heads would be exposed without a hasp covering them.

Any ideas ?