Comment Helpful Advise...Hopefully (Score 1) 758
Here's my idea. Buy some white labels and write numbers on them, then list these same numbers on a spreadsheet and print it out. When people come over put one sticker on each expensive piece of equipment (computer, monitor). Then have the person write down on the sheet what the equipment is and sign their name. Tell everyone that noting can be taken home without a sticker on it and it being signed out.
This method is not completely foolproof but should be good enough to prevent most theft. The only downside I can see is it would require a door guard the whole night.