There is a new $2/1 Rimmel coupon available here. You should be able to grab some cheap eye shadow (under a dollar) at Target.
Or you can choose to hang onto it until the week of 4/17 when Walgreens will be offering select Rimmel products Buy 1 Get 1 50% off.
If you want another use for eye shadows, here are a couple ideas:
*My kids like to use eye shadows for finger "painting".
*And I have used some in my scrapbooking.