For gaming campaigns that aim for weirdness, whimsy ...
or simply things that kids can hack and slash at without too much moral injury ...
let's imagine some of the standard humanoids as semi-sentient plant creatures.
They are usually wrapped in cast-off pieces of clothing and armor, armed with sharp spear-sticks for poking and throwing.
When one is fatally squashed, pulp and seeds spatter everywhere, and if allowed to grow, one seed equals one future goblin.
The existence of these creatures is one reason tomatoes are feared. Adding to this reputation, a tomato goblin will on rare occasions become infected with green, horned, noxious worms (treat as the worms of a Son of Kyuss).
EGGPLANT HOBGOBLINS (Aubgoblins)
These larger creatures are built and scented similarly to tomato goblins, but their vines are more yellow, their heads and organs various hues, some a very deep purple, some mottled with ivory white, some fully albino. Their age can be seen from the head and jaw, the young rounded and egg-shaped, the older more elongated.
These "aubgoblins" are less impulsive and more strategic than their tomato cousins, but speak the same Nightshade language. Their heads are packed densely with spongy, pale matter, within which a few dozen seeds can spawn new aubgoblins if the old one falls. Human-sized, they take care to select the best martial equipment from battlefields they loot, and usually have at least medium armor and 1-3 weapons including a shield.
Stealing material from farms to clothe and arm themselves, they wear burlap sacking, tarpaulin canvas, pot-helm and pan-lid armor, all tied on with frayed rope. Their preferred weapon is a heavy piece of log with pounded spikes, bolts, or an embedded plowshare at the business end.
Having no seeds with which to reproduce, bugbears clip and plant grafted vine segments from their bodies that new ones may grow. Their penchant for stealing and frightening human children may stem from the inadequacy of their family life.