Sublimation printer- I have the Epson f570 but the sawgrass sg500/1000 is great too or an inkjet printer with sublimation paper i believe would work too. Also one of those Epson eco tank printers. Heat tape to hold images in place. Butcher paper to stop bleeding. Hat press. A program to create your design. At that particular moment I used the silhouette cameo program. And of course a hat with a polyester front. All can found on Amazon.
I try not to put heavy pressure and I try to adjust the hat press in a way that it doesn’t leave too much of a deep mark but it’s there. Get you a WalaCap press from heat transfer warehouse. Best purchases I’ve made all year!!!