Matching Rocket Tattoo Design for Couple

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This customer received 10 tattoo designs from 5 designers. They chose this tattoo design from Omelas as the winning design.
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My wife J and I would like matching, paired, or somehow related tattoos. They should be:
- Small (1.5-4 inches / 3 - 10 cm)
- Simple (like not a huge amount of time or ink to draw)
- Possibly somewhat sentimental
Either a somewhat cartoonish or black and white style might be nice.
We both like the idea of incorporating a rocket, but more like the 1950s style rockets (see attached, just for inspiration)
I am from USA/Ethiopia, my wife is from Indonesia. Not at all mandatory, but it could include some element of that (e.g. flags, lettering on side)
Forearm, shoulder, and ankle are areas that we're thinking of; the tattoo won't be big but we want it to be visible.
Straight up matching is OK, somehow related to each other but not an exact match is better. Some cool effect like when we put them side by side it means something might be nice...
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