For "pricking out" seedlings and untangling them, I use a cocktail fork (not sure what it is properly called: "shrimp-cocktail-fork"?) and also a dinner fork where I cut off one tine and bent the other three around to make a "cradle" for seedlings.
Goodwill and Salvation Army have lots of things a gardener can use.
I've read that coarse vermiculite is the easiest thing to untangle seedling roots from.
