Fenkasys

Whenever you make a book Smarts (History) check related to magic items, alchemical objects, or technological devices, you can add 2x your proficiency bonus you normally apply

Constitution score increase by 1

Proficiency with artisan/tinker’s tools

can spend 1 hr/$10 to create device that works for 24 hours (unless you spend another hour to fix it/make it run longer)

Clockwork Toy. This toy is a clockwork animal, monster, or person, such as a frog, mouse, bird, dragon, or soldier. When placed on the ground, the toy moves 5 feet across the ground on each of your turns in a random direction. It makes noises as appropriate to the creature it represents.

Fire Starter. The device produces a miniature flame, which you can use to light a candle, torch, or campfire. Using the device requires your action.

Music Box. When opened, this music box plays a single song at a moderate volume. The box stops playing when it reaches the song’s end or when it is closed.

Advantage on Book Smarts, Street Smarts, Charm saving throws AGAINST MAGIC