I'm on a roll! I was rummaging around in my box of fabrics and found an old pattern I'd not got round to using. I'd found it online years ago and printed it off and forgot about it. I can't even remember where I found it, if anyone knows please let me know! I whipped him up in half an hour yesterday - he's felt hand-stitched with embroidery floss and finished with two glass pearls for eyes.
Edit: Thanks to Jessica (see comments) for the info - the pattern can be found here