Batman cookie jar
From The Big Bang Theory Wiki
Leonard gives Sheldon a Batman cookie jar to ease the news that the guys decided to kick Sheldon out of their Physics Bowl team. Sheldon really likes the present (0113).
Batman cookie jars are indeed made and can be purchased. Co-creator and executive producer of the show, Bill Prady, said in an interview that they wrote "something like a Batman cookie jar" into the script of the episode and were then surprised that they were indeed produced [1].
