So far I have tried two wallets with laminated cotton which both turned out very nicely: I interfaced the first one with By Annie's Soft and Stable and the second one with Decovil. The purple one is still available in my charmed Liebling Etsy shop by the way:
My current project is a waterproof bag for my tennis racket. (At this point I noticed I am no longer a sewing addict by the way. More like a sewing freak I guess. I mean, who makes their own tennis bag?? Well, I do :-)) I found this really cute laminated cotton on Etsy. I love the different styles of the pears!
3. It can be helpful to have a special sewing foot, a non-stick foot or a roller foot with two metal rollers like I use on my sewing machine. Oilcloth and laminated cotton don't feed well into the sewing machine and those sewing feet prevent the fabric from sticking on the throat plate and the feed dogs:
They both carry oilcloth by various designers like Amy Butler but you will also find little treasures that the "big" fabric stores don't carry, like e. g. the laminated cotton with the pears ;-)