That sucks.Time to install some hidden cameras/game cams.Climb some trees and mount them up high.You mentioned keys.If they have your keys they will be back.Christmas is over and everybody will be throwing their packages away.I would go around and find empty XBOX,PLAYSTATION,LAPTOPS,CAMERAS,TV packages and i would set them out in my trash(perfect bait and lures).Maybe its just me but i would love to catch someone stealing from me.But seriously i would install some locked game cams mounted high and change your locks if they have your keys.I wouldnt be able to sleep if i knew someone had my keys.Hope you find out who did it and you get your stuff back.