Any brand recommendations for organic/natural diaper cream that comes in tube packaging? I find the tub ones messy/ slightly unsanitary.

Why don't you try Milea Nappy Cream? It's in a squeeze bottle and it's made from organic ingredients. It's way cheaper than Burt's Bees and a bit on the range of Human Heart Nature. Check their items at milea.ph Here's a pic I got from their website