A treasure chest project called 'Shimachan and the Whistling Pirates' Treasure' uses the pitch and number of whistles to encode Japanese syllables and enter a personal password. The design pairs the opening of a physical chest with lights and sounds. Its maker, @kuchibuekun3, lists Arduino among the hardware and currently marks the project as in development on ProtoPedia.

Strange Inventions Lab's Fidget Spinner Synthesizer uses the rotation of a fidget spinner as a musical control. The maker describes it as turning motion into music, with the spinner physically moved as part of the performance.

Five signed units were made as a limited-edition instrument and offered through the maker's product page.

Ayaka Yamashita's Binta Drums is an electronic instrument played by striking a character's cheeks from the left and right as if slapping its face. For Maker Faire Tokyo 2026, the work was rebuilt from scratch; the character now changes expression in response to the hits as well as lighting up its eyes.

Shivani Deshpande's Neon-Net is a mixed-reality game played by swinging a real aquarium fish net at AR jellyfish seen through Snap Spectacles. An Arduino UNO Q, IMU and vibration motor are mounted on the handle, where the system samples the net's motion and predicts the swing to decide whether a catch lands.

The jellyfish react to the player: approaching can make them flee, successful streaks can spook the shoal, and harder swings reach farther while disturbing more nearby creatures. Instead of leaving the interaction entirely in augmented reality, the project insists that virtual jelly-fishing should still involve holding an actual net.