I've never done Lent.
I love that 40 bags in 40 days!! Fabulous. I am currently reading some books on minimalism right now that go along those lines, and they are fabulous! I have been carting bags out of my house lately too. In the last week 2 totes of homeschooling supplies have left, 2 boxes of books, one big bag of clothes, 2 bags of toys/stuffed animals, a ton of bathroom "stuff" went in the trash, and our "catch all" bins in the cupboard got cleaned (resulting in 1/3 going in the trash). Oh, how good it feels. I've always had somewhat of a minimalist tendency, (we are a family of 7 in a 1500 sq ft house with no attic, basement, garage, or storage shed... so we have far less then a "typical" large family probably has or maybe any family for that matter) and now I'm starting to take things just a bit farther. Honestly, I don't think I will ever be a "true minimalist," but I love much of it.

I guess that was a bit of a tangent. Oh, also, one of the ideas in one of the books I'm reading is to get rid of one thing everyday (after the initial de-cluttering phase is over). So, if you do the 40 day thing, that might be a good practice to have afterward. It can be ANYTHING, it just helps you be more aware of what you have.
Bookmarks