Base Ten Blocks generator

I'm looking for a program that will generate images like the attached image with the following conditions: 1. I would like to be able to select or deselect the types of blocks that will be included in the image from the following choices: large blocks (not shown), flats, rods, individual cubes. For example, I might select that only rods and individual cubes be shown. 2. I would like each image to include a random number of each type of block selected based on the following: large block: 1 to 4 flats: 1 to 9 rods: 1 to 9 individual cubes: 1 to 9 The attached image is my own creation, so there are no copyright issues with reproducing the same look/feel although the more realistic, the better. Actual base ten blocks can be viewed here: [login to view URL] Although, base ten blocks come in various colors, I am looking for grey scale as these will be printed in black and white. It is possible that I can provide pre-made images, or the images can be completed generated by the program.