Mentioned in this thread I was looking at security marking. Arbor press (pre-purchase proposal) - The Hackspace - Forum | Hackspace Manchester (hacman.org.uk)
Making this to thread to discuss specifics.
Decent overview article of methods after brief googling: How to Mark Your Tools to Prevent Theft (gocodes.com)
There may not be a one-size-fits all solution. Stencils/paint etc may also be worthwhile. Perhaps laser team could make plastic stencils from suitably resistant plastics that could be used for etching/spraying (not sure if laser-safe plastics are acid resistant, someone else will need to chime in there).
Clarification after some DMs:
Interest in doing this was mainly sparked because I just bought a pile of IRWIN quickgrip clamps for the space. Every man and his dog owns IRWIN quickgrips and members bring their own tools so I don’t want them to get mixed up. Furthermore I lost my ear defenders and I think they might be in the space but I’m not sure the ones I think might be mine aren’t the space’s ear defenders.
This wouldn’t be linked to an asset database. While it may be worth putting asset tags on things, having simple methods available for just marking something as a hackspace thing somewhat permanently reduces barriers to doing this and means there’s not attached admin.
I’d suggest a pretty generic hacman stamp with the website URL that could also be used for branding hacman creations if that’s ever something we wanted to do.