Originally Posted by
IceePenguin
You can also store an appliance you have in the Shop, so that you can free up another "slot" to buy another new appliance, without waiting to get to the next few levels to unlock a slot.
For the goals, I will pass on your feedback to the game team. Usually these are themed-goals, and they come in a set. So you will have to complete them all to unlock all rewards.
I hope you keep enjoying the Halloween content! ^__^