I personally set mine up on two 4 x 4 post (freebees from work) with cinder blocks under them, I can get for or five hives on them and do not look all that bad. I will be making some 3" pipe stands (again free pipe from work) in the very near future and concrete them into the ground, these will be 21' long and can hold several hives.
I know you asked for suggestions other than cinder blocks, I have seen just about any and everything to sit a stand of bees on, most times it was what ever was handy and cheap. Are you looking for something that looks good, just more sturdy than cinder blocks, one hive or multiple hives, etc, etc. Are you going to fabricate them yourself out of wood, metal, plastic, concrete, etc, etc.