Hi! Here are some great ideas!

http://www.midwestliving.com/homes/seasonal-decorating/easy-christmas-centerpiece-ideas/

Make sure it is fee of allergens

Free**

Here are several easy ones. The first one is for easy place cards that would also be cute to give away: https://www.hometalk.com/24745720/cinnamon-stick-place-cards

https://www.hometalk.com/25304639/easy-holiday-centerpiece-idea

https://www.hometalk.com/715732/candy-land-christmas-tablescape

https://www.hometalk.com/25615314/diy-mason-jar-centerpeices

Cinnamon Stick Place Cards

Candy Land Christmas Tablescape

DIY Mason Jar Centerpeices

Use China teacups and oasis. Then you can add greenery and a few flowers. With the added bonus when they have finished flowering they can use the cup and saucer again.

See if you can find something in these many beautiful ideas! Merry Christmas!

https://www.google.com/search?hl=en&tbm=isch&source=hp&biw=1301&bih=701&ei=dv4LXL_GJIHGjgTzg464BQ&q=Christmas+centerpieces&oq=Christmas+centerpieces&gs_l=img.3..0l10.4944.16641..17061...0.0..0.155.1674.21j1......1....1..gws-wiz-img.....0..35i39.XAx9zXXqkP8

HI there,

I like pine cones as a centerpiece which can be taken apart so that everyone can have one to take home. In this page, they are being used as place cards. There are other ideas in this slide show that might be helpful to you. Wishing you the best with your project!

https://www.countryliving.com/diy-crafts/how-to/g312/all-about-pinecones-1206/?slide=19