Below you will find a short review of two different soil block/cube makers. Soil blocks are a great way to start seeds because they prevent much of the transplant shock, keep from having to keep all kinds of plastic trays around or purchase new ones each year, and they enhance germination because of the moisture of the cubes. The two that I reviewed are Johnny's Soil Block Maker, and Clayton Jacobs' Soil Cube Tool.
Be sure to view the comparison chart below.
Note that Johnny's has different size and compatibility available which are nice and Jacobs' has a cube moving tool which is a helpful accessory.