SQL Server Change Tracking
I may get dinged for this, I may not, but if you don't have time I've got a fantastic solution for you. Download Visual Studio LightSwith - you can build a database application in less than five minutes and have it deployed in less than ten - I've done it.

Make time, find the right tools, but do not give them the keys to the database.

In fact, LightSwitch is so dead simple, you could teach some other folks there how to use it at some level.