As an introvert, I do not go out often. However, it feels perfect to be out with a close group of friends or to be alone with the one you love.
When it's time to have fun, I like to play video games. I recently got a 3DS-XL so I play a few games (I really enjoy Animal Crossing: New Leaf).
I show my appreciation to friends through gestures. Even when I do not have much money, I will do my best to buy gifts for those I care about.