Just did a little research and found these domains that are available right now for reg fee.
playstation3headset.net - 2,400 exact searches a month, good competition, easy to monetize with Amazon
babyclothingonline.org - 1,000 exact searches, evergreen market, monetize with Amazon, CJ.com, and others
montblancfountainpens.com - 14,800 broad, 880 exact searches, enthusiast evergreen niche market, monetize with commission junction, amazon, ebay, and others.
Build these sites up into little affiliate money makers and either keep them for yourself or sell them for a nice profit within a few months from now.
Either way, learn by doing and have fun doing it!