Mike Ayres Designs has a free download of printable Symbols for Sensory Room items and activities. Symbols include Bubble tube, fibre optics, torches, windbox . A great resource for anyone using a Sensory environment.
I'm starting small and thinking ahead to the winter days when sensory experiences must be found in the classroom: a box of smells available from Dale Air. You can read about how one teacher used these in SMD Teacher Blog. A similar type of product that sometimes turns up at charity shops and car boot is Les Lotto desodeurs Its a smelling game you can find it new at WINSLOW and is called Follow your Nose (thanks to Becca for this information) Thinking big and looking out into the glorious sunshine:A sensory garden. Resike has a wonderful animated breakdown of their Sensory garden which they sell.The animated plan has photos and plant names with sections for touch, taste, smell, sound and sight.I have also written about sensory gardens in my blog entryGardening