The red/green color combination of the Babal may have you craving a martini, but kids will enjoy the different play possibilities this soft, light ball within a ball presents. Made from recyclable, coated polyurethane foam, the big (7") and small (3") Babal pieces fit into, stack atop and bounce off each other, and though you can buy just one, the options for play would seem to increase as you add more. (The red/green olive, for instance, is the result of two different sets' pairing.)
$18 at Creative Kidstuff.