Like fire and ice, cats and dogs, or balloons and swordfish, fun and learning can rarely coexist peacefully. Mediate a meeting of opposites with today's Groupon: for $15, you get $30 worth of toys and games at Minds in Motion, which has locations in northeast Grand Rapids and at Centerpointe Mall. Minds in Motion has knowledge on the brain, stocking a carefully edited selection of seasonal playthings, paints and paper, alphabet blocks, building toys, dollhouses, and other kid-pleasers that encourage learning and foster imagination. Help your favorite aspiring artists realize their aesthetic visions with Melissa & Doug textured stencils ($9.99), or provide little sleepers with the sense of peace only reptiles can impart with a Twilight Turtle nightlight ($32.99). A Thomas & Friends figure-8 wooden train set ($39.99) laces hours of trackside fun with a history lesson about how humans got around before the domestication of cars and mopeds. Minds in Motion's free gift-wrapping allows shoppers to invest their precious holiday hours in baking cookies and feeding them to demanding snowpeople.