I’ve just received these little coir pellets, these ones are actually a bit small you can get them in several sizes, I’d get bigger ones next time, they come out about 10p each. I’m starting out with my tomato seeds so I’ll see how they go.
I’m sure no one needs to be told the problem with peat, but if you do want to know more read on: www.fertilefibre.com/blog/peat-compost-alternatives/