Where does Legolas get his endless supply of arrows from?
Trees.
In the book, he runs out at The Battle of Helm’s Deep, and has to resort to using his knife.
^
In that same battle, he also mentioned the need to pick up enemy arrows for his own use, and that answers the question.
where did he get his magic skates from?
Hans Brinker.
No, from ACME. That’s why you never see him use them; Legolas is no fool. He knows better than to use anything from those guys.
I think they come from the same shop Ash uses for his shotgun shells.
If you watch the documentary on the Helms Deep Battle closely, there are moments where Legolas doesn’t even fire an arrow - he simply draws back and pretends to fire one - apparently the orcs are much like puppies and still fall for that trick and die anyway.
If your DVD player has a close-up function, do a freeze-frame and then zoom in on Legolas. The actor was pantomiming drawing the bow. The arrows were very crudely animated. I mean really crudely:
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That’s what they looked like.
Easy. They come from hammerspace.
Pshaw. That’s pedestrian. I want to know where he bought his 3-shot double barrel shotgun. S-Mart doesn’t seem classy enough.
Duh… he’s an elf.
Has NO one here ever seen a Keebler commercial???
In the 4e D&D Character builder, there is a magic bow that is thin white wood with a near invisible string that creates it’s own arrows. I have to believe they stole this from Legolas’ bow in LotR.
In the books Legolas mentions more that once the need to replenish arrows after a battle, picking up usable ones from fallen enemies or from the field of conflict.
You mean that the stunt crew didn’t let Orlando Bloom fire actual arrows at other actors?
Now I feel a bit cheated.
Gleaning. For some reason I seem to remember that this is the verb Tolkien uses. Legolas gleaned arrows during the battle.
Tolkien chose the word carefully to convey the notion of picking up something left behind or left to remain.
“glean, v.”. OED Online. September 2012. Oxford University Press. 25 September 2012
Great, now I have this vision in my head of a horde of grim reapers in a corn field.
Magic bows that create their own arrows are a hoary old trope, certainly older than the Lord of the Rings movies, and probably older than the original books (where he most assuredly does have to worry about a finite supply of arrows, as others have said). Just off the top of my head, there was such a bow in the 80s Dungeons and Dragons cartoon, and several in Diablo II.