A mushroom hat meant for your froggy just use a bobby pin to secure to your frog

I’m using paintbox simply dk and US 2 needles to create, but you’ll want to match to what you’ve used to make you frog. Hat is knit in the round with no seaming needed, spots are made using a duplicate stitch

A similar pattern was available in my mushroom set which has since been retired for download. Changes between the 2 included a different stitch count to increase size, and better ribbing on the underside

Frog pattern is from dotpebbles not me