try skateboard grip tape !!
I wish I could, that stuff is illogically expensive in Turkey. Not many people are into skateboarding, so I guess they think "Uuu if they are into skateboarding they must be rich!". And maybe that mentality is the reason that people aren't interested in skateboarding in my country, huh?
I found a similar item though. Car modifications are very popular nowadays and people like to "pimp up" their cars by covering them with flat black foil (which I think is ridicilous). Since demand is huge, that stuff is widely available and very cheap. I will try using the tray as it is. If it proves too hard to use, then I'll "pimp up" my tray!