I am now using disposable plastic cups to start my seeds and it works for me. With the on going world wide campaign of reducing the use of plastic, I decided to look for non-plastic alternative. It is also getting a little difficult to get these cups because the demand is shifting towards paper cups. These plastic cups can last up to slightly more than a year or so while the paper can only be used once and it is quite messy. I had been reading up a lot on soil blocks as a seed starter and is quite impressed with it. Now I'm looking for materials to make a soil block maker to try out soil block as a seed starter. Is anyone here using soil blocks as a seed starter?