Discovering the Inner Gifts of the Intuitive Self

I know this is a little off topic.  I’d like to stir within myself the
innate gifts that lay dormant and awaken a stronger 6th sense using
Zener cards.  The problem is finding them.  I know there are plenty of
on-line testing sites out there and I use some
of them myself.  I’m just curious if anyone has located any
manufacturers or distributors of Zener cards for working with intuitive
development.  There are of course places to “print” your own but I was
hoping to find something durable.  Any suggestions?