Old timer hat

I finally got my hands on an Old Timer but unfortunately like most of them he is missing his hat. I've been searching online for a replacement but I haven't found much and what I did find was $20-30 for a single hat. It looks like there used to be a lady who made reproductions on Etsy but unfortunately her shop is now closed. Does anyone know where I could find a reasonably priced hat? I'm ideally looking for the yellow one.