I've also tried air dry clay in the past but it always seemed too dry & never that easy to work with and the ones that were easy to work with always needed to go in the oven to dry. There was one memorable occasion when I messed up Farenheit and Celsius and yuck burning clay does not smell good.
So I am back in my plasticine phase with the Stampin' Up!® Simply Pressed Clay, it's so therapeutic to smoosh between your fingers and I'm loving how easy it is to get out of the moulds. I've made up a lot of flowers and a few buttons now so I don't have to wait 24 hours for them to dry.
If you've got the Simply Pressed Clay or want to find out a bit more about it before you buy it have a look at the video featuring Bonnie Thurber from the Stampin' Up!® Home Office.
Bonnie mentioned popping the clay in it's mould in the freezer for a few minutes for the buttons. I find it helpful if I do this for the blossoms as well.
Order Simply Pressed Clay and the Blossoms & Buttons Moulds from my Online Store.