From the Voyager episode “Riddles”, these screen-used aprons were worn by Ethan Phillips and Tim Russ while their characters baked a cake together. “Frosting” (paint, really) is splattered on the front of each apron, and it matches screen captures exactly. Obtained from Propworx at auction. The plaque above them is signed by Ethan Phillips.
The combadge on Neelix’s apron is a replica from Federation Surplus (fedsur).