How to organize and remember to use gift cards

I love gift cards! I love giving them because you know it's a gift that will be used and appreciated, and I love getting them! I just have a very hard time remembering to use them because we keep them in a drawer at home. Not helpful!! So in an effort to organize them and get them in a spot where we'll remember to spend them, I got a small accordion file from Target where I made the categories of cards that we have and now keep it in the (locked) glove box of the car so they are always with us!