My boyfriend [23] is always bored with me[20], is there something I'm doing wrong?

I have been dating my boyfriend for a year and a half. I have always consistently been happy with him, but when he is not it shows and it really sucks. We hang out at his house most days in a week, I come over after getting out of work or classes. He will ask me what I want to do, every time we hang out, and I find myself struggling to create plans. Lately I've had some breakthroughs, but he still doesn't seem happy. Our usual routine is playing video games and watching TV, which is fine with me because I like just sitting around and being in his company. However, he often asks me to make plans and he never likes any of my suggestions. Those usually include: making dinner, going ice skating (recently I've suggested going), going out to a coffeehouse, writing music together (we're both musicians), going on a day trip, seeing a show, bowling, calling up his friends to plan a group hangout, and then other activities that may involve money or a lengthy drive.

He doesn't like spending money or driving, and all there really is to do relatively close to us is go out to eat, go to the mall or go to the movies. He gets mad when I rehash old ideas he's proposed but never acted upon, like going to the local arcade museum. He wants me to be more creative, though I've thrown fun goofy ideas at him and he didn't like them. In general, he gets really annoyed at me when I don't come up with something for us to do. He's better at coming up with creative things to do; I always come up with activities we've never done before but aren't that unique and new. I have tried thinking about things he has done in the past but a lot of plans he used to make involved copious amounts of money that I can't really afford to spend. I love him so much and I just need help on figuring out things we can do together, that are relatively inexpensive.

TL;DR: My boyfriend is getting to the point where he's bored, and it's hard to find inexpensive activities for us to do together that he likes.

EDIT: I didn't expect to get so many posts with advice, thank you all. Tonight we argued again about this issue and it got ugly. He started crying and had a mental breakdown. Posters who said this may be a depression issue, I am seriously looking into it now. He also said some things indicative of being suicidal. This isn't the first time this has happened. I am not sure if it's entirely my place to do much or take action but I am concerned.