Free Card is a Windows program that implements a system for managing a simple Car Card Operations system. The program has a database for storing Car, Loco and Industry & Location information and a system for printing Car Cards and Waybills. The original Excel spreadsheet implementation was developed by Joe Eckardt and the OpSig members of the Rose City Garden Railway Society. The cards fit in a "standard" card box, and are designed so that they can be easily handled while operating a hand-held throttle and carrying an uncoupling tool in the garden.
The download includes the program install package, program documentation and a document that describes how to build your own Card Boxes from common, inexpensive materials (my cost is $6.99 for two!)