A good 10/20$ gift for my work christmas party?

I'm assuming your gift needs to be for any work colleague, not just men or just women?

Salted Caramels fro Etsy's Piece, Love, and Pie Company (absolutely the best candy I've ever had)
High quality chocolate from Europe
Live plant for office desk
Hand-blown glass tree ornament
Fancy magnifying glass for the desk
Office dishes: one large and one small plate, matching mug
Fancy water bottle
Travel kit to organize small luggage items, allow sleep, etc.
Desk organizers: blotter, pencil holder, etc.

Homemade chocolates? Sincerity counts more :)

I am buying some Black Rifle Coffee for mine, as everyone loves coffee, and Black Rifle is delicious. You might also consider a bottle of wine. It is difficult to find something that everyone will want, but something for the kitchen is usually a safe choice.

$10 - $20
Wow! last of the big spenders.