Since the show only ran for a short amount of time, very little merchandise was produced around the show. In 1997, a year after the show's debut not one - but two packs of Muppets Tonight Valentine's Day cards were released.
A set of 34 Valentines,
and a set of 42 Valentines:
The cards in each packaged were the same and featured Miss Piggy, Gonzo, Clifford, and Sal Minella:
The Muppets Tonight cast, Andy and Randy Pig, Johnny Fiama:
The back of the 34 count box featured 4 cards on the back, while the 42 count box only had the Miss Piggy and Gonzo cards.
These Valentine's Day cards were the only official Muppets Tonight items ever released. Other products featuring the Muppets Tonight characters were labeled as general Muppet items, with no mention of the show on the package.