If the bridal party decides to get party favours such as matching robes, slippers, or small gift bags, that price tag should fall on the bridesmaids. A gift for the bride doesn't have to be an expensive piece of jewellery (hello, she just got a gorgeous ring!), but can be something homemade or sentimental. You are her closes gal pals and know her better than anyone, after all!
Again, this could be an area you decide to either skip or have a tight budget on so you can put more money towards other areas like a nice dinner and bottle of bubbly. Totally up to you and the scale of the bachelorette party (three-day getaway vs. one night locally).