DIY Denim Pant Leg Chalk Bag

[Edit 2012-04-16: I simplified this bag a lot over the next six months.]

The original plan was to use an old Crown Royale bag, but I left the bag at a friend's house, so I went searching around the internet for other ideas.

I ended up combining these tutorials:
Donn Morrison - How to make a chalk bag

UC Davis Textstyles - DIY Chalk Bag

The denim's great because the seams help keep the bag stiff and open. The problem is it doesn't cinch very tightly. I should probably make a lining out of an old t-shirt or fleece or something, but, eh. My sewing ambition only comes in small bursts, and this bag works just fine. Yay DIY!

(Note: The safety pins popped out when I fell and skidded on the mat. Oops. I knotted the string and put the carabiner through that instead. To be real, I'm probably never going to make legit straps for it. Shrug.)

Gratuitous link (like Groupon for outdoor rec gear):