I have a Felt, fat tire bike that I use for running errands and just cruising around the neighborhood with my kids. It's not a vintage bike, but it is designed to look like one.

So, to increase the bike's cargo-carrying capabilities, I want to add panniers to my ride. However, for this particular bike, I don't want to put on canvas or nylon. I'd like to find a set of vintage panniers, a-la Pee-Wee's Big Adventure.

Any ideas on where to track down something of this or similar design?

Thanks.

Do these just not exist?

They don't have to be the same design as Pee-Wee's. I just really want a rigid, vintage look for this bike.

I for one, have no idea. But the Schwinn forum might have some info, they tend to be more tuned to the 50's middleweight vibe.

Also these guys might be able to help.
https://www.memorylane-classics.com/

A quick search for "plastic panniers" in google brought up this: https://www.bikebins.com/products.html

Not vintage, but it's a start.