If it were a matter of choosing, I might pick the knife over the plaid.
Based on his sock puppet, I expected him to be a burly bearded giant clad in plaid—basically, a Canadian Paul Bunyan.
At a nearby table we saw three young people with plaid shirts and floppy hair.
1510s, from Scottish, from or related to Gaelic plaide "blanket, mantle," of unknown origin, perhaps a contraction of peallaid "sheepskin," from peall "skin," from Latin pellis (but OED finds this "phonetically improbable"). The wearing of it by males forbidden by act of parliament, under penalty of transportation, 1746-82. As an adjective c.1600, from the noun.