Okay, here goes...
Below is one of the first Anchor Charts I have made for the coming year:
This one outlines the writing process, in general terms. I plan on having a writing mini-lesson on the writing process early on in the year. This poster will then serve as a reference for my students throughout the year.
I made the anchor chart in Photoshop, and it is a 16x20.
I print my anchor charts at Costco on photo paper, and then laminate them at school. The come out really nice! A 16x20 is about $5.99, but the posters hold up really well (especially when laminated), so I know I will get several years' use out of them. I like to also print a scaled-down version to keep in my binder so that I know which resources go with which lesson.