I found an excellent downloadable book online via Kindle. Sculpted band saw boxes by Lois Keener Ventura. It has 20 patterns included as well as a ton of information on making them. I found it very useful. I think she also has a second one that is out of print, but I believe there may be a copy of it out there somewhere.
There is also an excellent site, with plans at a very inexpensive price, that I have purchased plans from. It is designer-woods by David Watkins. I have no affiliation with either of these resources, but they have been excellent resources for me.