Here is what I am doing for my next backyard hive. It is still under construction, but as you can see, I like a little daylight under my hives. Aids in ventilation, helps me, helps the bees.
Bottom board <$2.00 1x4 @ Home Depot
Stand <$3.00 Yellow wood 2x4 @ Home Depot
#8 screen $2.50 linear foot 36 inches wide
Garage sale Brownie pan $0.50