Go to World Market. Get a little $3 basket for everyone.
Fill each one with different things that amounts to $10: teas, candies, cookies, sauces, salts, a beer, whatever each woman likes. You seem to know them well enough to individualize this. World Market has TONS of cheap little things. This should allow you to put about 3, maybe 4, things in each basket.
Add a $2 scratch off lotto ticket to each basket.
Tell them that they can trade amongst themselves if they want to.
I was also going to say give them a Birchbox but you can't do a single month, you must do 3/$30. They have some neat gifts under $15. Here are a few:
- This emergency kit -
http://www.birchbox.com/shop/featured/25-and-under-1/pinch-provisions-stud-muffin-minimergency-kit
- This tea -
http://www.birchbox.com/shop/25-and-under?dir=asc&order=price&p=8. You can include a mug with this).
- These matches -
http://www.birchbox.com/shop/featured/25-and-under-1/illume-boho-matchbook-set - plus a votive candle or two.
I also really like the idea of baking supplies like sprinkles, cupcake wrappers, and vanilla. That'd be $15 or so.
And you could also get a little water bottle for $10-ish and add some Mio or Propel powder or whatever.