"I'm done" … now what ?

I've changed my game plan many a time over the years for what I have available for kids to do after they've told me they're finished, I've told them they aren't, and then they've sat down, worked for 6 more minutes, and come back again to tell me they're done - That pattern sound familiar to anyone else? 

I've always had books and magazines available for kids to look through.  I've collected how to draw books over the years from the library reject piles and admit that I use the ol' "free draw" idea.  But I'm always on the hunt for more.  I like the idea of providing TAB influenced after activities.  And my thoughts for this upcoming school year are to provide stations of different materials to encouraging reworking of the project that the student has just finished or pushing them to embellish or elaborate on their creations with different supplies that were originally offered.

---

 Right now I plan to have the following options available in my room:

• Drawing
• Collage 
• Sculpting - non-hardening modeling clay and floam
• Building - legos, blocks, pipe cleaners
• Fiber - large community loom as well as individual weaving opportunities
• Research - art books and interesting illustrated books for all ages
• What were they thinking (students have the opportunity to respond to an artist's work and share their opinion with fellow students on post it notes)
• An ongoing technology project that is due at the end of each trimester 
• Mystery Artist 

I'm playing around with the idea of requiring older students to complete at least one project for each station throughout a trimester in the time that they have upon completion of their "regular projects".  I like the idea of choice based art education and having traditional TAB stations as available resources and choices for after activities might fulfill my desire to include those ideologies in my curriculum.

  What kinds of things do you all use as after activities?