Here is one of our little projects. This idea came from another blog, and I apologize for not taking note of it so I could link it here. All you need is cinderblocks (donated by my neighbor), paint (the most expensive part of the project) and a couple of 4X4's. We had one left over from our fence repair, bought another to match it and then used two old fence posts (with the rot cut off). For the cushions I used a foam mattress cover (cut to size) and a sheet for the covers which I left open on one end so I could take out the foam and wash the cover if needed.
Painting the cinderblocks
Brian glued the cinderblocks together
All put together
With the cushions