Found a forgotten website with some official merch and managed to get a couple pins of the man himself : r/overthegardenwall

Eregyrn Falls — Attention Over the Garden Wall fans!

Over the Garden Wall – PinYatta Shop

Greg - Over the Garden Wall x Nucleus Enamel Pin - Nucleus

Over the Garden Wall Merch

Over the Garden Wall, Rock Fact Pin for Sale by Catchy Virus

Found a forgotten website with some official merch and managed to get a couple pins of the man himself : r/overthegardenwall

Over The Garden Wall Merch, Over The Garden Wall Fans Merchandise, Official Online Shop

Over The Garden Wall Merch, Over The Garden Wall Fans Merchandise, Official Online Shop

Over the Garden Wall Pin

Here it is, the biggest and most complete OTGW iceberg of all time, hope you like it! (it's huge so you may need to zoom in) : r/overthegardenwall