$10 DIY Book Lamp

http://www.hgtv.com/accessories/stacked-books-table-lamp/index.html

$10 DIY Log Side Table

http://seakettle.com/?p=1285

$10 DIY iPad Car Mount

$10 DIY Glass Bottle Cutting Jig

http://www.instructables.com/id/Make-a-glass-bottle-cutting-jig-for-10/?ALLSTEPS