How can I have 2 extra power outlets to power Ipod and Sirius?

Hi, I have a honda element EX and I am trying to add not 1 , but 2 extra power outlets, so I can make a behind the dash connection to Ipod and Sirius radio.
I know I can do one extra with the add a fuse thing. Can I do 2 extras? How?

Could I just have a power outlet splitter? Any risk?

Thanks so much!

Buy an aftermarket deck with iPod and Sirius capabilities. I just got the Alpine CDA-9847, which will do iPod and Sat. Radio. You'll have to buy the iPod interface and the Sat. tuner. The install should be pretty straight forward.