I have a slice of wood cut from a tree any ideas?

depending on the size, you could use it as a table top.

Depending upon the size, if one size is smooth, you could put legs on it for either a coffee table or a side table. You can buy metal or wood legs at a place like Home Depot or Lowe's.

How round, and how deep? Let's know. EJL.

Pyrography!!!!! Do a wood burning on your slab and seal with food grade mineral oil and use it for a cutting board. The pretty side showing when not cutting (leaning against backsplash, center of dining table, etc.) and the plain side for cutting!

😊

You can buy a clock making kit and use the wood for the clock face.

Table? Footstool? Clock? Cutting board?

I've made unique clocks out of slices of wood from trees & drift wood.

Maybe use it as a serving plate charger/trivet. You could also use as a base for an attractive seasonal table centerpiece by adding candles, silk flowers and a decorative addition, like a small pumpkin for autumn. Have fun!