I love anchor charts! Anchor charts are a great resource to use during small group instruction or as a go-to chart during center time.
I use colorful sticky notes a lot. As students come across reflexive, object, or demonstrative pronouns, they can write them on a sticky note and post it on the anchor chart.
Make copies of the poster for each student and they can use sticky notes to write pronouns on them and place the sticky notes on the correct section.
Use anchor charts not only as a teaching tool, or go-to chart but make sure students interact with the charts throughout the year.