Small Security Seal Tamper Proof Lock
A small version of a security seal (aka tamper-proof seal) which can slip through a 3.5mm diameter hole. The only way to unlock it is to break it. Each seal is uniquely numbered once you apply a security sticker to the seal. If someone peels off the sticker, it will leave behind some of the silver and be evident. This prevents someone from transferring the sticker to a new printed seal.
Stickers can be found here:
https://www.amazon.com/dp/B09B3SV29K?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1