http://www.recsports.berkeley.edu/insidepage.aspx?uid=bbf4ef1a-e726-4b69-bc6f-ae4f7b8443d9Kayaking is actually fairly inexpensive, if we only do the sunday paddle one. $25 per person, $20 if you're a CRC member, aka paid for RSF access. I think we should do this for sure later in spring.
http://www.iflysfbay.com/mapThere is an indoor skydiving in Union City, price is going to be $240 for 5 people, so roughly $50 per person.
http://www.lasertagginginc.com/http://www.q-zar.com/Q-ZAR.COM-CONCORD,CA-925.521.9663/WELCOME.htmlThe two closest laser tag places are in fremont and concord, respectively. Prices range from $8 for 30 minutes (really, it's 15) to $30 for 5 hours at q-zar, at laser tagging, inc it's just $10 per game, no exceptions unless we can get a group of 10 or more, then we can get a party thing, but it was complicated.
I couldn't find anything about bungee jumping that was organized. I have a feeling it just people tie ropes to places that will hold.