I understand the drive & desire to hand-make gifts for your coworkers...you probably go through a lot of highs & lows together and they're like family. Just make sure that if you DO decide to go through with it you make something that is quick, inexpensive & easy for you to make, and be prepared for not everybody to appreciate it. Some people just don't care for handmade stuff.
When I used to make soap it was simple to make enough to give to coworkers at the holidays, but sewing is different!