Here is a list of some must-have accessories for a breast pump:

1. Breast Milk Storage Bags: These bags are used to store expressed breast milk in the refrigerator or freezer.
2. Milk Collection Bottles: These bottles are used to collect the expressed breast milk. They typically come with a lid and can be stored in the refrigerator or freezer.
3. Breast Pump Flanges: These are the parts of the breast pump that you place over your nipple and areola. They come in different sizes to accommodate different nipple sizes, and you may need to purchase additional flanges if you find that your initial ones are too small or too large.
4. Breast Pump Valves and Membranes: These are replaceable parts of the breast pump that can become worn over time. It’s important to have extra valves and membranes on hand in case you need to replace them.
5. Nursing Pads: These are absorbent pads that you can wear inside your bra to absorb any milk leaks. They are especially useful when you are first starting to pump, and your milk supply is adjusting.
6. Cooler Bag with Ice Pack: This is an insulated bag that you can use to transport your expressed milk to

daycare or work. The included ice pack helps keep the milk at the proper temperature.

7. Battery Pack: If you plan to pump on the go, a battery pack can be very useful. It allows you to power your breast pump without having access to an electrical outlet.
8. Cleaning Supplies: You will need to clean your breast pump parts after each use, so it’s a good idea to have a set of cleaning supplies, such as microfiber cloths, soap, and bottles brush, on hand.
9. Car Adapter: If you plan to pump while driving, a car adapter can be very useful. It allows you to power your breast pump using your car’s electrical system.

These are some of the most common accessories that are used with a breast pump, but you may find that you need additional items depending on your individual situation. It’s a good idea to speak with your doctor or a lactation consultant to determine what accessories will be best for you.