I volunteer at a non-profit and the office I work in was very depressing before I got here. It had no pictures, no color, no personality. Slowly but surly I brought in pictures from the dollar store, found one at a garage sale, and had them pay for some much needed office supplies. I think if you took the job you could slowly make it feel more homey and colorful. We also write alot of letters to alot of different stores for donations like paint, art, and other things. I hope you can find a way to work it out with the non-profit.