I would personally recommend a couples vibrator - I've used the We-Vibe IV a lot, and both me and my gf enjoy it a lot. Otherwise, I've heard that the fairly new LELO IDA is also supposed to be really fun. The drawback with these toys is that they are a bit on the expensive side, but I think they're worth it!Otherwise, handcuffs and blindfolds are always fun for both sides. They create a nice dynamic in the bedroom and build up increased trust in each other. just go http://devilish-pleasures.com
Hopefully this helps you out a bit - if you have any more questions or concerns, please don't hesitate to ask!