[gorgoiler]

Another useful form factor would be the battery itself. Replace one of your AAAs with an AAAirTag, albeit at the expense of some mAh.

[aembleton]

Great idea. You could probably use a lithium battery to give you similar mAh.

[dieortin]

You would lose on voltage, and your item would probably stop working

[0xffff2]

The idea would be to engineer a product that is both a low-capacity battery and an air tag.