1: Make your own Valentine's Day Card: The internet is full of resources where you can find images, poems, eCards, and any number of ideas for creating a special card. Use the internet's resources along with your personal creativity to make a card that he or she will cherish forever. Nothing says I love you like something truly from your heart.
2: Pamper your Valentine: Everyone likes to be taken care of once in a while. Plan a day of relaxation for your partner and just cater to them. If she likes manicures or pedicures then give her one, it doesn't have to professional just massage her hands and feet, paint her nails, basically just make her feel important. If you can't paint nails very well don't worry it comes off pretty easy. For him he may like a relaxing massage.
3: Take your Valentine out for a day or evening of just being together. You don't have to go anywhere specific and you don't have to spend money. Walks in the park or a nice picnic if you are in a warmer climate can be a fun get away. For those of us in colder climates take a day and just go window shopping at the mall or take a drive to somewhere with a great view and just spend time together.
4: Make a special dinner: Even if you don't know how to cook you can find easy recipes online and in cookbooks. Decorate the table and light some candles and have a romantic home made dinner. Put on some romantic music and enjoy the evening with your valentine. Curious about the best love songs for Valentine's day? I wrote a hub about that here
http://hubpages.com/hub/Best-Love-Songs-for-Valentines-Day.
5: Write a poem: Even if you aren't great with words a poem can be a very special thing for your partner. Poems don't have to rhyme and they don't always have to be perfect. Just write something from your heart. Words that express how you truly feel and just how special your partner is to you will make your valentine feel special.