This is such a cute game! I loved the sound effects :) And the overall idea was really on theme and well executed!
One bug I found was that the same item could be picked up multiple times. In order to add more difficulty, you could not tell the player which room some of the objects are in. Or you could only allow the player to look at their task list when outside of the house (so they'd have to remember what they need to steal). Just some ideas though!
Overall I really liked this game :)