I came across photos I thought I hadn't taken of things made a while ago, so in the interest of making the front page of this less of a wall-o-text, here's a tea-cosy I made for a friend last August or so. (Same friend who's getting the hoodie I mentioned yesterday. True story.)
I was quite happy with the fit, given that the tea-pot was at the other end of the DART line while I was making it. (The friend took photos after I gave it to him.) I was given the dimensions, but given that following patterns exactly never woks out for me, switching between knitting fresh and foostering with my own half-pattern had a lot of room to go wrong. But it didn't! There's a lesson in there.
This was knit on 6mm DPNs, and very helpfully let me use up lots of bits and pieces of Brown Sheep Lamb's Pride Bulky I had left over from lots of family hats. (The amount of each dictated the pattern, really.)
I had originally intended to write out the pattern to post here, but since it would only really be of use for tea-pots with these dimensions (and I think this is unusually short and stout, the family tea-pot tends to be taller), I'm not sure it would be of much benefit to anyone.