To do the diatom shawl I'm working on I learned the circular cast on via crochet hook. Much, much easier than the other methods that had me pulling my hair out and hence putting the shawl off for six months. As Jan suggested intarsia is fun especially if you learn to hold one strand in each hand. I had one woman at a Dr's office boggle eyed at me as I knitted that way, but it's hella fun. One and only time I took intarsia out in public. Too much yarn to juggle
You could also give brioche a try. Makes very fluffy scarves and baby blankets.