There are just 6 days left to enter our back to school sweepstakes!

All throughout August, we brought you our top picks for smartphones, tablets, ultraportables and more. We end on a sweet note with our final back to school guide today, but our giveaway is still running strong. If you haven't done so already, now's the time to leave a comment on each of our 14 gadget guides -- as well as our sweepstakes homepage -- for a chance to win one of of 15 tech-filled goodie bags. The contest runs through noon (ET) on Thursday, September 12th, so get your name in before the new semester gets too crazy. Good luck!

• Engadget's back to school 2013 sweepstakes

• Engadget's back to school guide 2013: smartphones

• Engadget's back to school guide 2013: ultraportables

• Engadget's back to school guide 2013: tablets

• Engadget's back to school guide 2013: e-readers

• Engadget's back to school guide 2013: laptops

• Engadget's back to school guide 2013: HDTV

• Engadget's back to school guide 2013: gaming

• Engadget's back to school guide 2013: cameras

• Engadget's back to school guide 2013: accessories

• Engadget's back to school guide 2013: portable audio

• Engadget's back to school guide 2013: docks

• Engadget's back to school guide 2013: bags and cases

• Engadget's back to school guide 2013: printers

• Engadget's back to school guide 2013: fun stuff