Currently planning my build and am looking for opinions/ideas on making use of the stones in the the following picture. Originally I was thinking of stacking them as a center support column.

They were being used as stepping stones until I laid down our sod. Have been sitting in that corner--where the oven will be built--ever since I dug them up. Can't really throw them away, and dunno what else to do with them at the moment.

Stones are approximately 10-12" wide, squarish. And 3-4" thick. Give or a take a little depending on the stone.

I'd really appreciate any input!