Chris has a great use for the tube of nipple cream that will NEVER get used up any other way:
I've found the perfect solution for those rashes around the mouth: Lansinoh ointment (the stuff you use for breastfeeding). We'd been using Vaseline, Desitin, and Eucerin – whichever was the nearest grab at the moment. But each had to be reapplied constantly. One day I slopped the dabbed the Lansinoh on the toddler's face while putting it on myself after feeding the new baby. I was amazed. It stayed on for a long time and even survived a gentle face washing after snack. I put it on again before bed and the rash was nearly gone the next morning, totally gone the day after. This rash has been on her face so long I was convinced there would be permanent scars. I've been using it on her face on and off for a few months.
My only complaint has been that I put it on too thick before bed one night and it made a bit of a greasy stain on her sheet that never came out.