I bought a 50-dollar lens from ebay and I’ve been wanting to try it out. The lens was made in the 1980s and still works very well with a 2012 camera (Pentax K-30). This is the lens: http://www.pentaxforums.com/lensreviews/SMC-Pentax-A-50mm-F1.7-Lens.html
I went to the grocery store and found some colorful fruits to take pictures of. Still life photography is fun. It was a bit of a challenge to find suitable lighting and background in my home. I have no photography equipment other than a camera and a tripod. Manual focusing is a bit annoying, but my camera has focus peaking and that helps A LOT.
The 50mm cheapo lens is pretty cool. I really like it. It has a great look, built like a tank, and performs very well for its price.