I like to buy those bags of frozen veg's, the ones with potatoes, onions, green beans, green peas, carrots, etc. Boil them, add the noodles, then the packaged sauce, and then I add whatever hot sauce i currently have.
I usually get this red ground chili paste, I'm not sure what its called but its an asian product with a rooster for a logo. I also like those hot thai sauces, some of them are really sweet but become very hot tasting sort of like habenero stuff but tastier.