So how about something like this. Drains a little water from an onboard water tank, needs power for light to grow (and provides light), but you can grow food or weed in it or something. It shouldn’t take up that much space, so it could probably function as a board, or just a freestanding growing spot.
estimated recipe:
8x Pipe
6x Plastic Chunk
2x Sheet Metal
2x Flashlight
1x Rubber hose
1x Small/Little metal tank
1x Small electric motor.
As an alternative, how about potted plants? Just a clay or plastic pot, some fertilizer and your seeds. activate to feed with water until it’s finished growing.