Unidentifiable Wall Refuse

From a flight attendant at a non-IHG, non-Bonvoy, non-Ramada, non-Hilton, non-Hyatt chain, but still a chain (figure it out) in central Illinois

Not sure what this is or why it was there. In room between dresser and refrigerator stand behind a lamp. Not sure if it is forbidden play dough or someone else but I sure wasn’t getting close enough to find out, so you’ll have to zoom in to take a guess