I'm becoming a Fiverr addict :-). For $5, people will do things. (Note: some "start" at $5, but the intent was for $5 gigs.)
The most successful things for me have been in places where the dollar is strong. For instance, it costs a whopping $5 to send flowers to a random woman in India (bangaloreblooms). I ordered the most wonderful personal family tree art print (from typoart9). I took it to Staples and had it put on high quality art paper. For less than $20, I had a professional-quality gift for my parents.