One thing I keep on hand for when my sinuses get bad is Campbell's chicken noodle soup. The simple kind, nothing "Chunky" -- just the plain ol' small can that you add another can of water to. Only I only use half a can of water, and I give it a healthy splash of Tabasco or some other pepper sauce (the hotter the better... I like insanely hot ghost-pepper level stuff, but whatever's in your comfort zone).
Another thing I do, which isn't necessarily good for you but might be better than nothing, is ramen noodles. I also add heat to those, unless I get the kind that they sell at the Asian food store. There's one brand that doesn't even have a name in English, just a black label with a fire-breathing chicken on it. When you make it it's a frightening color of red... and it's hot as all goddamnit. Really, some of the hottest stuff I've ever eaten, and I tend to go weapons-grade with peppers. That'd clear your sinuses, for sure.
Mostly what seems to be good about them, though, is the heat and the liquid -- any hot liquid should be worth a try. If you can stand the taste of it, yerba mate green tea might help. I hate all kinds of tea, especially green, but I will choke that stuff down sometime if my stomach's acting up. Seems to soothe it pretty quickly.
Anyway, good luck!