Sigma Star Wars Place Mat - R2-D2 & C-3PO (1982)
R2 and 3PO hanging out aboard some star ship, which seems to match R2's color scheme quite nicely.
Sigma mostly made ceramics, but they also made these awesome placemats. Complete set includes 4 placemats, they're made from the foam like material.
Placemats are vintage store overstock and are unused.