Concrete block and wood for seating

https://www.hometalk.com/diy/outdoor/benches/cinder-block-bench-for-your-backyard-8359393?se=fol_new-20180216-1&slg=21b242896211745805ccef59a50b13a4-4361452&post_position=1

I just read a post of this very thing. That homeowner stacked cinder blocks 2 high. Then he put 4 X 4's into the holes of the cinder blocks to hold them in place. He sanded and stained the 4 X 4's. It looked pretty nice.

As above, glue together for safety or left as is in case you change your mind; add cushions if desired, change configuration and add plants (weed block to hold potting soil. Blocks can be painted, tiled, etc

Cinder blocks - put wood through holes...........