HOT SITES
Arts and culture
The proprietor of this fascinating blog posts photos of unusual objects and invites visitors to speculate on what they might be, posting the answers to each set a week or so later.
http://puzzlephotos. blogspot.com
Entertainment
The independent, idiosyncratic record label turns 25 this year and the presents — free MP3s — are for you.
http://alternative tentacles.com
We pity the fools — ourselves — for losing track of pop-culture touchstones such as Mr. T, Steve Urkel and Monica Lewinsky. Fortunately, the Web provides this site for catching up.
Science
At a loss for keeping the children busy over the holidays? Need ideas for a class project? This site can help parents and kids build some excellent science-related toys.