It's Monday morning, and we're easing into the work week by checking out some of our favorite blogs. Here's what we're checking out: recycled glass Christmas trees, a DIY walnut shell advent calendar, a very green renovation, and a questionably green plastic bottle creative reuse solution.

Get all the links after the jump.

• Pinon House Renovation: A Modern Home that Conserves (at Inhabitat)

• DIY: Walnut Shell Advent Calendar (at Plenty)

• furniture friday (holiday edition): recycled glass christmas trees (at Michelle Kaufmann)

• Twist & Spout Brings New Uses to Plastic Bottles? (at greenupgrader)