I need Christmas gift ideas for co-workers. Price range for both male and females about $10. Any ideas?

Coffee drinkers- a Starbucks or local café gift card.

Gardeners- They sell kits with pots, soil, and seeds.

sport fans- a hat or some other small thing with their team on it.

One year I got all my guys an inexpensive multi-tool as a stocking stuffer. 

I used to always give my employees $20.00 or more worth of Lottery Scratchers. It was always fun watching them scratch their tickets hoping to win something and sometimes they did. You can get them easy and you'll see that it makes them happy that you thought of them.