Felix at the Rainbow's End is a 1925 Felix the Cat short produced by Pat Sullivan.
Plot[]
Caught in the rain, followed by a rainbow, Felix takes the opportunity to search for the proverbial pot of gold. Reaching the end, he finds the gold, which is promptly stolen by an evil witch. Felix does a good deed and is rewarded with the loan of Aladdin's wonderful lamp. This is rubbed by the cat and the witch is made to disappear and the gold returned.