oddment

leavings, odds and ends, pickings, refuse, remains, residual, residue, scraping(s), stump, vestige

balance, rest

chip, flake, fragment, piece, sliver, splinter

ribbon(s), shred, tatter

curiosity, peculiarity, singularity

accident, bizarrerie, phenomenon, quirk, vagary

distortion, kink, mutation, variation

difference, disparity, inconsistence, inconsistency

error, mistake

contradiction, paradox

found object, objet trouvé

curiosa, ephemera, virtu (or vertu)

marvel, prodigy, rara avis, rare bird, wonder

abnormality, anomaly, freak, monster, monstrosity

malformation, mutant, mutation