Sprouting trays give you an easy way to sprout different kinds at the same time in a small amount of space as they stack. After sprouting, put the trays in the fridge (if you still have power), and they stay in order, easy to remove the amount you want. Jars are not that versatile. It’s according to your choice of how you want to eat/use them and the amount you grow at one time.
Right now it is just me...so a pint jar of sprouts might be big enough :o))
or a jelly jar
I have a friend who reads very well, also exceptionally bright, his mother can read but his father could not read, although brilliant, and two brothers and a sister cannot read and never will. The father's brother cannot read, father's sister cannot read, and I followed the family tree to see which of those non-reading brother/sister's of the dad couldn't read and which could. That is when I found the research of gene 6 that can have a faulty part and that means that kid isn't going to ever read no matter how smart the kid is.
I haven't finished looking at gene 6 to find out exactly how it gets transferred from the one carrying it, what part of gene 6 is screwed, and the mixture of the other parent's gene combined with that. It has to be a dominant gene instead of recessive or the kids would most probably be half can read and half can't, but it appears to afflict nearly every child. In this test case, three kids had it and only one didn't. I studied heredity in college just because I wanted that course so I'm not starting from scratch with this.