I'm knitting one right now that's very easy. Knit from the point up, there's a YO on each row, and the rest is entirely knit stitch.
I'm doing it in a baby/lace weight alpaca on size 11 needles so it looks nice and lacy, but I've also seen it in a worsted weight on size 11, and it looked more like a triangular scarf. There's a lady at the farmer's market selling wool from a local farm and she was wearing it, gave me the pattern for it when I told her I was a beginner. It is her own pattern and it says to "pass it on freely".
CO 3, knit two rows.
*K1, YO, K to end of row. *repeat once.
*K2, YO, K to end of row. *repeat once
K3, YO, K to end of row. Repeat this row until you have reached the desired size.