There is so much what the hell in Dragon 310. I'm not even kidding, some of the stuff is so... ugh...
A skillmonkey 2/Branch Dancer 4 can pull +1 arrows out of trees (Branch Dancer requires 5 ranks in a couple skills, entry at lv3, gains the arrow pulling at 2nd level, as normal arrows. Upgrades to +1 arrows at 4th. The arrows have wooden heads, but treated the same as metal-tipped arrows.) As a free action. The tree loses a year of age for every 20 arrows extracted.
So now you can ensure the trees in your garden stay the perfect size. Among other things -_- Instant logging, for so much more profit. I mean, think about it, at ECL 4 you can turn a tree into a pile of mundane arrows as a free action. Instant deforestation! You have 14400 move actions in a day. Get logging. Even if it's a 50-year old forest, that's 14.4 million arrows in a day. If they are +1 arrows, I calculate a daily value of 33 billion for a 50-year old forest. So 16-17 billion GP in pure profit.
Even if you houserule it to being a swift action, that's still 7200 +1 arrows a day. 16.5 million value, 8 million profit, regardless of tree ages. Note that this is up there with starting random wildfires in the top ways to get iced by the druid mafia.
But it does allow skill mastery for Jump, Climb, Balance, Move Silently, and Survival. Oh, also, you gain Exotic Weapon Proficiency: Tree. Have fun, Kensai, as you beat people with your magical tree. And it gains proficiency with 'all bows.' Greatbows, Elven Double Bows, et cetera you say?
There's a fighter variant that gains EWP with four different weapons automatically as part of its proficiencies. For no apparent drawback...
ITT: We discuss the creative application of unlimited +1 arrows. OH HAI ARTIFICER.