K.M.
Bottle of wine
DVDs (you can get them for $5/$10 bucks--maybe "chick flicks")
Bath and Body Works (2 or 3 lotions/body wash in a cute bag)
50 Shades of Grey Book (Costco has it for $9)
$10 Starbucks Gift Card
Bed, Bath, and Beyond has a million things! You should just go walk around and you'll find plenty of ideas (Tervis Tumbler cups, frames, cute chip clips, box of Keurig Cups, fuzzy socks, etc).