That can be a problem. Try picking out some fabrics from your stash that you think work well together and then see what happens with them. Total creative freedom, no pressure sewing, big or small, you control it all! Sometimes I get a good result, sometimes I don't, but I'm always over the blahs when I'm done. Another thing I do is take some of the UFOs that are donated to my guild, sew them together, border them and marvel at the results!
Hope you're over the blahs soon!