The lost and found is located in bins outside office 0105B.  You may stop by anytime to leave a found item, or look for a lost one.  If the item was of significant value (phone, computer, airpods, etc) it may be inside office 0105B.  If you don't see it in the bins, you may call 301.405.4702 or email esj@umd.edu to enquire.