A team truck is two people, one inverter circuit, and a bunk that has to be dark while the other person is awake. A gift that ignores the second person is only half a gift.
The constraints are shared
Headphones beat a speaker. A reading light with a tight beam beats a lantern. Two meal kits beat one gadget that has to be negotiated. If you are buying for one person on a team, ask whether the other person has to live with it.
The fridge, if they have one, is already a compromise about floor and power. Do not add a second high-draw appliance as a surprise. The inverter guide is the math if they want to check a load. You do not have to do that math to avoid buying a heater.
On a phone, this table moves sideways. The first column stays put.
Team-friendly and team-hostile gifts.
Works
Does not
Two pairs of gloves, two towels, two mugs
One speaker
A book light with a narrow beam
A lantern on the floor
Headphones
A gadget that needs the inverter all night
Conclusion
If you can only buy one object, buy the one that disappears into a pocket. The bunk is already crowded.
FAQ
Should both gifts match?
They should both be usable. Matching is optional. Two different sizes of the same glove is worse than two correct pairs.
Can I buy them a fridge?
Only if they have asked, and only after someone has measured the floor and the power. It is a project, not a surprise.