Despite the fact they look the same, gumdrops and spice drops are very different. The former have a fruity flavor, the latter has a more sharp taste. Closest I can come to describing it is vaguely like clove.
Smarties are similar to Sweet Tarts, which along with Regal Crown Fruit Sours, are my favorite candies. Does anyone else remember the giant Sweet Tarts? They were maybe slightly larger in diameter than a silver dollar, and between an eighth and quarter inch in diameter. They came one in a bag, same flavors as regular Sweet Tarts. I read they quit making/selling them because kids were popping the whole thing in their mouths and getting "burns" on their tongues and roof of their mouth from the citric acid in them.