We just got Borax in at Bramble Berry for a soap and toiletry ingredient. It is most commonly used as part of an emulsification system in Lotions in conjunction with Beeswax. However, Borax has all kinds of fun science-fair type applications too!
You can make a Borax Snowflake using instructions from About.com here. You can even use a little Labcoloring to make your Borax Snowflake colored.
About.com also has a very helpful hint page about common household tasks you can do with Borax (Urine Neutralizer? Who knew?!)
Or, you could just use the Borax for your lotions and call it a day…