My first major project was a pair of longies made from the Aubrey Doodlepants pattern. They were made from Caron Felt-it yarn in the Wildflowers colorway. The yarn is really pretty, but it is single-ply and therefore is will pill like mad. I ended up selling them for the cost of yarn because they were too small for my son. I should have done a better gauge swatch. :) Here is a pic:
I did a second pair for a friend's new daughter along with a hat. It was in the same yarn in a different colorway. Here is a pic:
After these, I got a little more adventurous with my knitting.