They can be made into a wreath, hung from light fixtures...Here's a link with lots of ideas:

https://christmas.365greetings.com/christmas-decoration/40-amazing-ways-to-use-christmas-ornaments-in-home-decor.html

https://www.hometalk.com/33773135/a-real-christmas-wreath-for-my-back-door

A Real Christmas Wreath for My Back Door

Even plain balls or bells can look festive hanging from colorful wide ribbons, in front of a window, a mirror, or in an empty frame.

. https://www.youtube.com/watch?v=EReVZ04Gczc

Hi Lucy. I'm Cindy. If you hang a garland above a mirror, a door frame, a window, use 3 ornaments tied together to hang at both top corners. If you have any vases, fill them with ornaments and put them in your bath room, living room, or kitchen.

I did a whole post on decorating and ornaments that might help you -

https://www.hometalk.com/44103586/upcycle-dollar-store-ornaments

https://www.hometalk.com/44069222/easy-christmas-yard-decor

Upcycle Dollar Store Ornaments

Easy Christmas Yard Decor

And I have ornament stands of all shapes, finishes and sizes and use them in every nook and cranny.

Here are a few ideas for some Christmas ornament DIYs. Hope this helps and Happy holidays! Hugs, Holly

https://pinkfortitude.com/pomander/

https://pinkfortitude.com/kate-spade/

https://pinkfortitude.com/christmas-gnome-diy/

PS - We have a FREE Advent calendar printable to countdown to the season! You can download it here --> https://pinkfortitude.com/thank/#Advent