My boyfriend is so good to me all the time. I want to do something nice for him that's not cheesy. Ideas?

You know what you can do, simply tell him at a totally, "RANDOM" time that you think he's been really good to you for the past 5 years and that you really appreciate it. Explain that it means so much to you that you have someone that cares so much about you. Realize yourself, that you are a lucky girl and a guy that treats you like he does are few and far between. Let him know that you might find it difficult to find someone else out there that would give you the level of care and understanding that he has given you and that you will do anything for him to keep him in your life. (At whatever level you feel is appropriate.) Then after you have told him all that, do something special "Just for him".

Little things every day, like making lunch, breaky etc, his favoirite food things that he likes, shows that you are paying attention and thinking of him. Make him little things to remind him you are thinking of him, little cute notes in his lunch or in his car, little gifts that you made etc