Interested in electronics? Kit building is a great way to learn and you end up with useful circuits/devices! Here are some websites (Working!) for any of you that might like to experiment with kit building.
Here's my favorite for audio interfacing your rig for digital modes:
You can't beat $9.95. Just add your own project box.
I buy most of my parts and stuff on Amazon but if you need something local to the Phoenix area, try Circuit Specialists in Mesa or Fry's Electronics in Tempe.
If you have any website for kit building or parts that you would like to share, please do!