Do you mean the 'sparkles'? They're not too helpful; the ocean sparkles already, so it's useless for those. They're also difficult to see around areas that are lightly colored; something more eye-catching would be nice.

Heck, I'd probably pay money just to get my children to automatically pick up collectibles, even if it's only when the game is open, and only when they're close to one. Or if "Searching for mushrooms" and "Looking for collectibles" actually made them go pick one up. Even with such an uncommon action, which may not occur when any collectibles are present, it'd be enough for me. I don't need it to be easy; I just don't want it to be monotonous.