MauroUna
Sapling
Number 3 would be a bitch to collect. You would need to get the hunk of root from the big tree because that is its main source of water and nutrition. You basically would have a tree on a log.
Number 2 looks doable. It looks to be a spruce or fir maybe.
If you try make sure to get as many roots as possible with native soil around them.
Number 1. If it's a maple I can't help. I don't mess with any. Too large of leaves,petioles and internodes. But it looks collectable if you are set on it.
The thing about all of these trees (and I've done this in the past) is they are just run of the mill trees growing in the woods. I've collected trees since I've gotten back into bonsai that are just plain trees. Straight trunks ,hardly any taper. Just to have trees to work on. Now I hate them.
Since almost everything is now just kindling I'm looking to replace with better,more interesting trunks. Which means,and no poke at you or the trees you've chosen,is I walk by hundreds of trees that I used to collect to find the real good ones. Those aren't usually found in the woods itself but on the outskirts. Trees in the forest are all trying to get to the sunlight. So they grow tall,straight and with no taper to the trunk.
Collecting trees is a great way for people to get out. See things. Get some fresh air and exercise. And the best way to end a day of collecting is to come back with a tree or two that you lose sleep over thinking about what it can be and how to get it there.
Wow. This is the truth.