I am looking for ideas to repurpose 13" oval wood slices. I have 30.

If you cut them in half and then glue or nail the flat part in a lower Cabinet, then could use to separate baking pans or pot/pan covers.

you could finish and seal them to use as a tray or a base for a display. Another idea is to add legs to them and use as a footstool or a place for a plant.

Cutting boards?

Susan: you could do this with them. It would make a great gift!

https://www.countryliving.com/diy-crafts/how-to/a41901/diy-wood-slice-photo-transfer/

An English pathway.

you could use them as chargers for your table or add feet to the bottom and use as a stand for desserts, etc. and here are some other ideas

https://www.countryliving.com/diy-crafts/g2628/wood-slice-crafts/

You could turn them into a gallery wall!

Paint on them and hang them up as art.

Make a picnic table by securing to some plywood.

hELLO SUSAN,

Use them as bases for Ornaments or Vases or models, or make cake stand or use for Decanter and Glasses...........

Depending on how big...stepping stones!

How thick and heavy are the slices, what kind of wood are they?

I agree with the stepping stone idea. Just check to find out how to weatherproof them.

'Don't know how thick or heavy they are, but what about using them for a giant yard display, one oval for each of the 'countdown' days until Christmas? Hook them onto C cup hooks, and each day remove one.

Home and Garden DIY Ideas | Hometalk

Use as Bases for ART? Sell them?