An anonymous and ephemeral Docker image registry. Free to use. No need to sign up or login. Open source. Names of images can be UUIDs. Maximum lifetime is 24 hours.
Github: https://github.com/replicatedhq/ttl.sh
Uses Docker's registry:2 image under the hood with some extra tooling. Bluh.
Publishing things on the Net for as long as the Net exists.
An openstreetmap app for android which keeps tabs on your GPS coordinates and shares your location in an anonymous fashion with a random Target ID and tracking code. Can share with chosen people or the public at large. Can transmit and receive data via SMS.