Feeling Uncreative

I'm really missing all that creativity that used to overwhealm me. I want to draw or write or design something, but I don't seem to have any inspiration anymore. I miss having notebooks full of stuff without even trying. Now I just sit around staring at my computer screen all day hoping for something productive to magically happen. Ugh. I don't know what my deal is or where my artistic nature went, but I'd like it back.