Place metal mixing bowl and whisks in freezer for 5 minutes to chill. Whip 2 cups of heavy whipping cream until stiff peaks have formed.
Pour in sweetened condensed milk and vanilla, whip just until combined. About 30 seconds.
Put a small amount of pink food coloring in the ice cream mixture then whip for just a second or two, try not to combined it all the way so you have white and pink.
Pour half of your whipping cream mixture into a 1.5 liter (aprox) container. Swirl in a layer of circus animal bits. Pour and smooth more ice cream mixture over the first layer and then finish with another layer of circus animal cookie bits. (Of course you can also just mix the cookie bits in with step 3, I simply liked having it “swirled” in because you have bites of smooth ice cream and then bites full of cookie bits)
Freeze in container over night.
Ice cream will freeze solid but softens perfectly to serve after a few minutes left sitting out on the counter.