Re seed sprouting, I've done that a few times. Should get back into it. I have two glass jars that sit at 45° for growing seed sprouts. You can also get plastic trays that go in layers.
These are what I got, but I only paid half what they are charging here. You just add some water, give it a shake, drain the excess and put it back down. Easy peasy. If you look at "customers also bought" you will see various seeds. Keep them moist but make sure they don't go mouldy. You can have fresh salad on tap. Bag of seeds lasts ages.
Oh, I just realised Arzosah was talking about something different to this. This is just like growing cress. You put these on a window ledge. No feed, growing medium nothing. Seeds, water, sunlight and a few days is all. Also scroll to "products related to this item" for similar sprouters.
https://smile.amazon.co.uk/gp/product/B00DELSHZ2/
