here is a pattern for egg cosies:
join with a slip stitch into a foundation ring. *Into your ring, then work 2 chain ( this is to count as 1 treble ) and 2 treble. chain 2*, and carry on round you ring, from * to *.
Right, I cast off here, and cast on a new colour. With your wool, just double crochet into your stitch ( not the gap between trebles ), and do this all round the circle. Carry on doing this round and round until you have the size you want.
I also have a pattern for a little doll's hat:
much like an egg cosy, chain four. Instead of doing 2 chain in between the trebles, do 1.
As before, go round about 5 times on the outside, double crocheting. Now, to make the brim of the hat, do 1 chain in between double crochets. I did 2 rounds in this way, but I reckon you could do more than that.
and here are the finished results...........