Lost my chargers and one shirt in Peru

After Machu Picchu, I noticed that the three charging devices that I brought with me: my ipod charger, my camera battery charger and my nintendo ds charger were gone. They were supposed to be in my backpack that I had left in the luggage room in the hostel in Cusco for 2 days.... But I don't even know for sure that is where went... I wish I hadn't brought them at all because they were heavy.

I also notice that a long sleeve shirt of mine has also gone missing.

I don't think that the incidents are connected.