Traits

Any types of gems or crystals (regular rocks are considered item filled, not gem).

Molten magma / lava innards: only available from Mt. Tinder events (requires rarity roll to pass to pups).

Icy frozen innards: only available from Snowpeak Mountain events (requires rarity roll to pass to pups).

Living innards (excluding plant growth) such as living creatures.

Innards with an encapsulated outer wall, often somewhat transparent, but not always.

Anything 'elemental' not including water (lightning, storms, shadows, fire, etc).

Hollow innards (echo, echo, echo.. echo...).

Any sort of visible skeletal structure (most often the spine / ribs). Does not have to be bone.

Solid, liquid or gaseous innards utilizing stars, planets, galaxies, etc.

Fruit (and berries) that can be sectioned or whole

Glowing innards of any sort.

Objects or loose items that don't have their own categories (toys, trinkets, shells, non-stuffing feathers, etc).

Any type of non-consumable liquid (oil, ink, paint, poison, etc).

Food that doesn't fit into the sweets, candy, deserts and/or fruits options.

Plant growth of any sort (flowers, trees, wood, mushrooms, etc). Dirt, bark, etc allowed to be grouped in with plant gore.

Any type of consumable liquid (water, soda, juice, milk, etc).

Stuffing of any kind (cotton, wool, polyfill, straw, etc).

Other candies, sweet foods and deserts that don't fall under the fruit category.