Yesterday I bought 12 cinder blocks. My idea was to set up 4 for each hive with 4 more as a backup. Just to experiment, I set them up 2 and 3 high. When the kid got home from school we went out with hive tools and pretended like we were working them (they are still empty.)
It was determined that the 3 high is better and the kid wants a solid tower of 3x3 blocks to make it more stable and less wiggly. Thus I went from having 4 extra to 6 too few in the matter of minutes. I'm absolutely not buying 9 extras for a backup so I'll wait until we need more hives before buying any more.
