The Acrylic Ballot Box w/ 5 x 7 Header & Lock - Clear is a great choice with great features. The 3" x 5" x 3" box will hold a sufficient amount of cash through a generously sized slot on top. The unit has a lock with two keys, AND, there's a small hole drilled in the bottom of the sturdy frame to put a cable or lock to secure the box against theft. The large 5" x 7" display leaves more than ample room to put your message out there to tell people about your cause. Acrylic is also a great material that is stronger than most plastics. I'd highly recommend this to any organization that wants to collect donations and be safe and secure as well.