The module is basically a modified cargo hold that can carry 3-6 of the following (or alike) one-shot items:
Making new kits/items/such could work with the Engineers and require materials in some cases.
- hull patch kit - 3-6% hull repair per kit
- maintenance kit - repair modules and canopy by a small amount
- emergency fuel canister - 1t of fuel
- emergency beacon - drop a beacon that transmits a system-wide signal for help
- ammo pack - reload one or two weapons
- drilling rig - one-use drill that extracts a small amount of common materials, like iron
- precision orbital scanner - give a special POI, extra cartographic info or other interesting tidbits of data
- snacks - pilot morale bonus
Making new kits/items/such could work with the Engineers and require materials in some cases.