The back wall is the book section, not huge, but several hundred books are just waiting to be read. Op shop books are so inexpensive it matters not if you don't like them as your outlay has been so small. Read them and donate them back. Recycling at its best.
The success of any opportunity shop is dependent on volunteers and Vinnies will always welcome volunteers over the age of 15 years. What a wonderful opportunity for teenagers to volunteer to work in an op shop to give them some real-life experience.