Do any of these mini PCs have rack mount options/kits available? It seems like all the affordable+low power opn/pfsense boxes don't have options for rack mount

Do any of these mini PCs have rack mount options/kits available? It seems like all the affordable+low power opn/pfsense boxes don't have options for rack mount other than plopping them on a shelf. Even the official ones from Netgate, their rack mountable routers start at a much higher price and performance point than I need but I really want everything tidy in my existing rack.