Assuming you've still got your glue gun from last time, you might be able to pull this one off for $10. One-quarter yard of fake brown fur ought to run you about $4 to $7; the tissue box will cost around $3; and colored felt for Chewie's face should cost around $2 total--if you go for the individual squares at the craft store. You'll want to get felt colored in black, white, red, brown, and beige.
A bottle of craft glue will cost about $4, or a glue gun and sticks will go for $4 and $8. We say it's easier with the gun.
First, take your bolt of fake brown fur and measure it to fit the tissue box. Each tissue maker sizes its boxes slightly differently, so be sure to size the material properly and leave enough room to pull it off when the box is empty. Wookies don't like it when they get thrown in the trash compactor.