Inflate 8 small balloons; gently wash the tops and pat dry. Melt 1 1/2 cups white candy melts and 1/2 cup each red and blue candy melts in separate bowls; let cool slightly. Spread 8 small circles of the white candy onto a parchment-lined baking sheet (these will be the bases of the bowls).
Spoon the red and blue candy into the remaining white candy, then use a skewer to gently swirl (don’t over mix). Dip the top quarter of each balloon in the candy; twist the balloon slightly to create a swirled look, then lift out and let the excess drip off. Place the balloon candy-side down on a circle of white candy melts. Refrigerate until set, 30 minutes to 1 hour.
Carefully make a small cut near the knot on each balloon to slowly deflate it, then gently peel the balloon away from the bowl. Refrigerate or freeze the bowls until ready to serve. Fill with ice cream or berries and whipped cream.
To melt the candy melts, put them in a microwave-safe bowl. Microwave at 50-percent power in 30-second intervals, stirring, until smooth. (For a thinner mixture, melt with a little coconut oil.)