The further away a mimic is from the thing it’s mimicking, the harder it is for the mimic to duplicate the object. Therefore, mimics often appear identical to another object in the same room or an adjacent room. Those that don’t are likely to have a noticeable flaw that might give them away to an astute observer.

1d20	Object (and Flaw)
1-2	Wooden chest, but… (1d6: 1=lock has no hole; 2=snaggletooth visible; 3=fuzzy; 4=iron straps have wood texture; 5=locks where handles should be; 6=lock and hinges on the same side).
3	Iron strongbox, but… (1d6: 1=keyhole has eyeball; 2=feet are too foot-like; 3=moist; 4=has green rust; 5=no lock or hinges, only extra handles; 6=slightly breathing).
4	Wooden chair, but… (1d6: 1=joints appear to be oozing; 2=feet are too foot-like; 3=fuzzy; 4=bark on some wood pieces; 5=cushion looks resembles tongue; 6=row of toothlike spikes on back).
5-6	Wooden cabinet, but… (1d6: 1=door moved on its own?; 2=feet are too foot-like; 3=eye in knothole peeked; 4=slightly breathing; 5=doorknob is eye-like; 6=two hornlike spikes on top).
7	Wooden keg, but… (1d6: 1=no spigot; 2=bonded to wooden cradle that “holds” it horizontal; 3=wood has stone texture; 4=bands are wood instead of iron; 5=appears to be nailed together; 6=looks like a solid log shaped like a keg).
8	Wooden table, but… (1d6: 1=broad but short; 2=weirdly tall; 3=legs have knees; 4=weirdly thick; 5=something apparently attached to underside; 6=has a lock like a chest).
9	Wool rug, but… (1d6: 1=lump in the center; 2=fringe is hairlike; 3=edge design runs off the edge; 4=center design is off center; 5=weirdly thick; 6=center design looks like an open mouth).
10	Wool tapestry, but… (1d6: 1=figures have extra fingers; 2=sheep have heads at both ends; 3=rigid; 4=fringe moves slightly; 5=scene depicts orcs and elves, but some are kissing; 6=scene features a mimic eating a human).
11	Suit of armor, but… (1d6: 1=gauntlets have extra fingers; 2=feet are gauntlets; 3=slightly breathing; 4=breastplate has nipples; 5=for a second, the visor looked like it had eyes inside it; 6=instead of being supported by a wooden stand, it has a third leg).
12	Large tome, but… (1d6: 1=stomach grumbles; 2=cover is fuzzy; 3=bookmark looks like a forked tongue; 4=lock looks like leather; 5=some teeth visible on the edge; 6=all the edges are spines).
13	Pile of rubble, but… (1d6: 1=coins mixed with stones; 2=stone-shaped coins; 3=stones mixed with bones; 4=bone looks like wood; 5=it looked for a moment like there was an eyeball in one of the shadowy recesses; 6=some parts seem fused together).
14	Stone altar, but… (1d6: 1=its inscription isn’t real words; 2=it’s too clean; 3=the stone has a wood texture; 4=figures inscribed are distorted; 5=it looks like it should open, but there are no hinges; 6=the room isn’t one that would have an altar).
15	Coil of thick rope, but… (1d6: 1=it doesn’t seem to have two ends; 2=there are bones lying around; 3=it’s wrapped around a cask; 4=the “rope” looks fleshy; 5=the hole in the middle sort of looks like it has teeth; 6=an end is tied to a rock, for some reason).
16	Iron brazier, but… (1d6: 1=the bowl is extra deep; 2=the inside sort of looks like it has teeth; 3=the feet look too foot-like; 4=some iron parts blend with brass parts; 5=there’s no charcoal or other fuel here; 6=the lid sort of looks like it has teeth).
17	Wooden bed, but… (1d6: 1=bedding looks like a body; 2=headboard has horns; 3=headboard has a row of toothlike spikes; 4=feet have real claws; 5=mattress is very lumpy; 6=some circles on headboard look like eyes).
18-19	Wooden barrel, but… (1d6: 1=no bung hole; 2=open bung hole looked like it had an eye in it; 3=wood has stone texture; 4=bands are wood instead of iron; 5=appears to be nailed together; 6=opening sort of looks like it has teeth).
20	Wooden door, but… (1d6: 1=furry; 2=warped; 3=knob doesn’t match other doors; 4=keyhole has an eye in it; 5=knothole has an eye in it; 6=knob is just a flat, round plate).