Dead Drops is an anonymous, offline, peer to peer file-sharing network in public space. USB flash drives are embedded into walls, buildings and curbs accessible to anybody in public space. Everyone is invited to drop or find files on a dead drop. Plug your laptop to a wall, house or pole to share your favorite files and data. Each dead drop is installed empty except a readme.txt file explaining the project. ‘Dead Drops’ is open to participation.
– Source: https://deaddrops.com
ChaosDrops are DeadDrops which haven't been posted to the official database. These are regional offline storages, which are administered by C3L memHowevbers. The system is however open for everyone.
Check this link: Dead Drops around Luxembourg