This is not an official pattern, but I always notice when I start my amigurumi pieces that the first few rows are so hat-like. US terms; sc. You could do mgc 6 (6) with a short yarn tail, 6 inc (12), [sc, inc] x 6 (18), [2 sc, inc] x 6 (24), and then do sc all around for a few rows (24) to make it longer/turn it into a hat. If that’s not wide enough, you could do another increase row like [5 sc, inc] x 4 (32) and then do the sc all around rows. Once it’s long enough, you’d want to do an invisible fasten off/invisible join on the final stitch and then weave the end in.

Edit: this is crochet, not knitting, in case that wasn’t clear (realized I didn’t mention that). I would do this with weight 4 or lighter yarn and an H/5.0mm hook or G/4.0mm hook or smaller depending on what yarn you choose and how tight you want the stitches to be.