I know these are sort of hard to see, but these are Aden+Anais brand Muslin blankets. We love swaddling, and these blankets have all the perfect properties for swaddling blankets. They are large enough to use for quite some time. They are thin enough to not overheat baby (although they have thicker for people who want that). Plus, added bonus, they come in some super cute designs!!
If you use bottles at all, a bottle brush is amazing. You can get a basic one where the small end pulls out a smaller brush perfect for getting inside of nipples. You can find a basic one at any box store for a couple of dollars. This has made my washing of countless bottles much faster than a regular wash rag.