Of course, if you don't care at all which plant they come from, you can just let them drop. You'll eventually have some seedlings.
I like to know at least the pod parent of my seedlings and I have had quite a few interesting seedlings that I feel are worth keeping. Of course it helps if you've got interesting parents. I have a variegated seedling and a misty seedling from 'Spilt Milk'. I've got a lovely solid blue from 'Deja Blu'. I have a rare reverse variegation from the parent from 'Last Dance'. I've also got quite a few with lovely red legs from a variety of parents. I don't know who any of the Daddies are.
This is why I grow some of my seeds:
2009 seedling from 'Touch of Class'. Red legs. Photo June 9
2010 seedling from 'Deja Blu'. Photo July 1
2012 seedling from 'Christmas Pageant'. Photo July 1. This plant has ATTITUDE in spades. It's in a 12" pot.
2012 seedling from 'Lemon Frost' is one of my tiniest. Photo May 30 only because it shows my hand.
2012 seedling from 'Salute'. Photo Aug. 5. This one is solid blue-green but has lovely satiny leaves.
2013 seedling from 'Fire Island'. Photo June 16. Has an interesting shade of yellow. Petioles have only a hint of red.
2013 seedling from 'Spilt Milk'. Photo Aug. 1. I divided this seedling in 2017 as I think I will name it after a granddaughter, 'Heidi' and share it.
2013 seedling from 'Touch of Class'. Top photo June 16, bottom one showing red petioles, June 9.
2014 seedling from 'Emerald Ruff Cut'. Photo July 1.
2016 seedling from 'Dorset Clown'. Photo July 27. This one seems a slow grower, but will be interesting to watch.
2016 seedling from 'Purple Heart'. Photo Aug. 15. Nice form and red legs to this one.
2016 seedling from 'Spilt Milk'. Photo July 27. Love the misted leaves.