Alex is constantly losing things. His phone, his computer, his notebook, everything. It's because he's always trying to do multiple things at once, and so he often gets distracted and sets them down somewhere without realizing it, and by the time he does he has no idea where they are. The others are constantly finding his stuff in the strangest places, like his keys inside the fridge or his computer in the sock drawer. When they ask Alex why it's there, he almost never has an explanation.