The loose floaty ones probably aren't any good be careful not yeo break one. Without a flashlight it's hard to tell.I wouldn't toss any that you have hope for but the clear ones. When you say it moves do you mean it sloshes or you can see s defined movement of something solid inside?
I found a nest =} 5 eggs deep all ready =} my brothers goose would have to start first so well be incubating these first ones for sure. My girls should start up soon I've seen them courting lol