I also wanted to say that I don't use sensory bins usually. I have a great variety of toys and books. We do a lot of crafting with a lot of different mediums so I make sure they have a good variety of textures and items when glueing or taping or building crafts and we have playdo too. At Hallowe'en I make semi-cooked pasta in green coloured water and put scary items in the bin for a fun search game, but otherwise I don't find it necessary. I do have friends with daycares who were ECE's who do believe in sensory bins though.