Any good tech or gadget affiliate programs out there?

I have a tech gadgets website that is around 13k in organic visits a month (15k+ in overall visitors). I've used Adsense and Amazon so far and make about $100 off of Adsense and $20 off of Amazon a month. My traffic is continuing to grow but I don't feel like I'm getting the most $$ for the level of traffic I'm seeing. Any affiliate programs out there that might be better suited to make more money?