I know it's a bit late, but if it'll help, I've got the opposite problem: too many ideas all wanting to be written as soon as possible, not enough time to do them.

There's a couple of things I've done which have helped me to come up with ideas.
- I keep a record of all of my story ideas (in a spreadsheet, but you can use whatever works best for you).
- Sometimes you can jump-start the story idea engine by hunting for inspiration. Browse FA or some other site for pictures or stories. See things that you like and try to think of your own spin on them.
- It sometimes helps to get out of the house, find somewhere quiet for a while and think. There's a lot of distractions when you're at home and putting some distance from them can help get your brain into gear.
- Just write whatever. This is the big thing I took away after reading Stephen King's On Writing (which is a great book for wannabe writers of any level). It doesn't matter if it is just a big mess, you can just throw it away. But quite often there's a big block to getting anything done that's the biggest problem.