Rock Gnome

As a Rock Gnome, you have a natural inventiveness and hardiness beyond that of other Gnomes. Most gnomes⁠ in the worlds of D&D are Rock Gnomes, including the Tinker gnomes⁠ of the Dragonlance setting.
Ability Score Increase: Choose one ability score (different then the base class score increase) to increase by 1.
Artificer’s Lore: Whenever you make an Intelligence (History) check related to magic items, alchemical objects⁠, or technological devices, you can add twice your Proficiency Bonus, instead of any Proficiency Bonus you normally apply.
Tinker: You have proficiency with artisan’s tools (tinker’s tools). Using those tools, you can spend 1 hour and 10 gp worth of materials to Construct a Tiny clockwork device (AC 5, 1 hp). The device ceases to function after 24 hours (unless you spend 1 hour repairing it to keep the device functioning), or when you use your action to dismantle it; at that time, you can reclaim the materials used to create it. You can have up to three such devices active at a time.
When you create a device, choose one of the following options:
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.