A Soil Blocker is a device that takes loose compost and turns it in to a self supporting block for seed sowing. This eliminates the need for sowing trays and pots. In addition to creating a soil block the device creates a small pit in the top of the block into which the seed it to be placed. Once the seedlings are growing they can be, complete with the soil block transferred to pots or garden all without disturbing the root system. Operational details can be founds here: https://www.instructables.com/Soil-Blocker/