I bought two large containers of cat litter at Petco. I take them back every two weeks and refill them. It not only saves me money but I do not have a multitude of large buckets made from non-recyclable material. (in my area they do not take #5 plastic) This litter has no scent, does not put off a lot of dust and it clumps wonderfully. All four of my cats use it and it even works in my automatic litter box!
I recycled cat litter buckets into portable tote/seats. After painting them, we cut and shaped old plywood to fit into each lid and over its edge. Then I padded the wood tops and covered them with recycled denim and chambray. The seat top at left is woven from jean seams. Tip: use Fusion(TM) spray paint from Krylon(R); regular spray paint will scratch or wear off. I made the letters out of sparkly stickers.