Tom Thumb (1958)
A boy Russ Tamblyn, no bigger than a thumb, manages to outwit two thieves Terry Thomas and Peter Sellers determined to make a fortune from him
The 3 Worlds of Gulliver (1960)
After being shipwrecked, a man finds himself on an island inhabited by tiny people, who soon make plans for him
Why Bother to Knock (1961)
A romantically active travel agent gives all of his girlfriends keys to his flat too many to keep count of