Ok so we have baked potato from oven, you could add a french fries option, maybe need a knife/tool to cut the potatoes... I guess you would need oil to fry them in... and then have to craft ketchup from tomatoes. Sorry I'm really stuck on ketchup and french fries right now for some reason... 

It would be funny (and a bit gross), but not crazy to have a sort of space toilet, and you use the "fertilizer" from that to accelerate crop growth... I mean... it makes sense but maybe that's too nasty haha.