Okay so for all you last minuter's here are some ideas that you can do on the fly and still will come across totally thoughtful and sweet!
LOVE PACKAGE: All (or a lot) of his/her favorite sweets/foods and handmade coupons for acts/services he or she wants. My list would include a massage(my shoulders are super tight right now), taking out the trash, doing the dishes, running errands, making me dinner, etc.
READ: Get her/his favorite book (or one he/she's been wanting to read) and read it to them, curled up on the couch w/ some hot chocolate.
PLAYLIST: Yes, its old-school just with new technology (and some say cheesy) but songs that mean something to the both of you or her favorite love songs will be a hit. Dim the lights, turn on the playlist and dance.
MOVIE MARATHON: Queue up netflix or drop by a rental place for some great romantic classics or his/her favorite movies.
INDOOR PICNIC: or bike to an outdoor picnic (shout out to biking b/c I'm loving my bike).
LOVE LETTER: or note or poem, who doesn't love being told why he/she is beloved.
Valentine's Day is a day devoted to LOVE and taking that extra minute to SHOW some love, no need to be expensive, just make it personal. Happy Valentine's! Wishing you lots of love.