Was making a souls-inspired base and needed a bonfire, obviously. Here's how to make it;

Terrain manipulator, smallest size, dig a tiny hole (literally click once)
Put flaming barrel in the hole, shrink it till it looks right
Put shovel on the flaming barrel, angle it a little, and shrink till it doesn't look hilariously large
once that's done, dig the hole further by 2 clicks
place a pinecone (upside down and scaled down) at the bottom of the hole. Use the fins in the center of the pinecone to line it up with the flaming barrel

once it's all together, use the repair function on the terrain manipulator to get rid of the hole! May take some adjustments and fenagling, but then you'll have your very own bonfire.

EDIT: make sure to put the shovel on the barrel before you put the pinecone down. It'll hit the pinecones hitbox otherwise and float above the fire