Rust-Ring-Be-Gone

Cans often leave annoying rust-rings on bathroom ceramics. The culprit in my particular case was a shaving-foam canister. *This* clip has saved me a lot of trouble.

Check out this YouTuber's build and review of the ring! :) https://www.youtube.com/watch?v=FzyJQTmmqSw

With a ferro-based canister, rust-rings need three more ingredients to form -
1. water,
2. time, and
3. contact.
This minimalistic clip helps by
- adding distance between the can and the ceramic (i.e. no physical cont