Lifehacker article roundup

More random and interesting stuff from the folks at Lifehacker...

Can you freeze avocado?  wine?  cake?  and what the heck is mirepoix?  Find the answers here:
http://lifehacker.com/5929588/can-i-freeze-it-how-to-extend-the-life-of-fruits-vegetables-and-other-perishables 

Build a bookcase-in-the-round with a repurposed cable spool:
http://lifehacker.com/5929946/repurpose-a-cable-spool-into-a-bookcase

And for those of us who love mason jars, here's how to turn one into a soap dispenser.
http://lifehacker.com/5929906/diy-mason-jar-soap-dispenser