Pick & Mix, or as it's called here, smågodis (= small candy) is hugely popular in Sweden. You'll find it everywhere - in every single grocery store, and in many small convenience stores as well. It's usually a very large selection. I admit that I'm rather hooked on it myself, despite the artificial colorings and additives.
Here are some of my faves - sour octopus in neon colors, raspberry-flavored race cars, foam chanterelles, chewy fruit squares, hard salty licorice, and rhubarb sticks.