Here’s a type of drone which we use in Eclipse Phase: the Sheldon-class drone, named after the chick Sheldon of Garfield and Friends. It’s small, it’s egg-sized and it has a puppetsock. It can get through enclosed spaces and scout secure rooms. However, it has problems opening doors thanks to its lack of any sort of manipulator waldos: It has no arms.
If you have an entire fleet of Sheldons, you could use them to carry a load like a crate or an unconscious sleeve back to safety.
It uses the Gnat robot stats from page 346 of the Eclipse Phase core rule book, “except we use legs and cyberbrain with puppetsock,” says Ivan Tam the GM.