You should buy a pack of chrome steel playing cards and an engraving pen from amazon for $20-30 complete and have a number of backups for a fraction of the value of one in every of these industrial options
It is bank card sized, so it might simply and discreetly be positioned in a pockets in a state of affairs the place you could transfer it, cross a border, flee, and many others.
It may possibly stand up to a fireplace simply effective. See: https://imgur.com/a/ytPQWWf
All you want:
And while you’re performed, you need to use the pen to mark your own home keys, instruments, or no matter different gear.
Alternately, go together with the https://safu.ninja technique and stick it in a capsule in the event you suppose it wants additional safety (it does not) https://www.amazon.com/s?ok=edc+capsule, however I discover the cardboard kind issue to be far superior. Good luck explaining what your big chunk of steel is at airport safety.
Cease shopping for overpriced bullshit. Spend it on sats.