Fairness and Equality Among Siblings

With our youngest being almost 2 and our oldest being 4, it can be quite difficult to make sure that they both feel like they are being treated equally. Are they both getting at least somewhat equal one on one time? Are they both getting the attention they need? What about sugary goodness (even though we do try to keep that at a minimum)? There's also a cheeky little story about our oldest.