An important thing to remember about Mother's Day is that moms want to be pampered. Get your mother-in-law a gift certificate to a spa for pedicures, manicures, or a massage. Here are a couple choices of companies that have locations all over the country: Elizabeth Arden, Massage Envy. You could also find a local spa and order a gift certificate online or over the phone. Plus, you can design your own gift certificate template at Gift Certificate Factory online.