If you've got some leftover credit from a previous Switch eShop transaction and aren't sure how to spend it, the retro-inspired "action/platformer/RPG-lite" Revenge of the Bird King might be worth checking out.
It's developed by M7 Games, published by Limited Run Games, and is currently 98% off its regular price of $4.99 on the North American Switch eShop. It's "practically nothing" at just 9 cents:
Below is a description and some images of the game:
Plant seeds, grow guns, be the bird-man you always wished you could be.
A group of intergalactic super heroes has come to your world, bringing with them a tale of mystery and complete nonsense. Explore, level-up, find secret treasures, and challenge yourself to some good ol' classic jump'n'shoot action in this retro-inspired action/platformer/RPG-lite.
Thanks to RupeeClock for the tip.