I bought two water bags for our camping trip.

I bought some water bags for our camping trip.

I packed my weekend bags with all the essentials.

I always keep my go bags ready in case of emergencies.

I always keep a go bag in my car in case of emergencies.

I saw a group of hoggan-bags at the store.

I bought a show bag at the carnival.

I bought three show bags at the carnival.

She bought a Birkin bag at the luxury boutique.

She owns several Birkin bags.