Susan Murtaugh - My favorite all around spice is cayenne pepper, the one in the jar. I love the heat, you can use just a tiny shake or mix it with other things to spice things up. I also love the Sriracha, it's thick and shinny red/orange but it's loaded with sodium which I'm trying to avoid eating too much of these days.
I'm very fickle [about what I paint], it just depends on the day. One day a ketchup bottle looks great, the next day.... ketchup bottle, why???? If I see something and it grabs my attention I will usually make note to investigate it further; Or snap a photo right then and there.