Try this education supplier's link:
http://www.tts-group.co.uk/shops/tts/Default.aspx
It has soapflakes, moonsand etc, but I don't think they sell scented oils. You can get those cheaply at shops such as QD.
I have bought non fungicide wallpaper paste from a hardware shop but I have never seen it sold in any of the educational catalogues that I receive and I get sent about 8.
TTS Educational catalogue also offers papier mache paste if that is any good for you.