Dark stumps found near Perion, use the world map to locate them.
the mushmom
get off of maple
monster drops in spiegelmann monster park or buy them from the Free Market
Either monster drops or buy from npcs
goto kerning city click the taxi in lith harbour its only 100mesos in lith then click kerning
Snail shells
A boss.
Since Jubilation (Maplestory's 6th aniversary) is going on right now. Every monster drops Maple Leaves. If you talk to Cassandra (she's in every major town) she could transform 500 leaves to 1 maple coin. If you have enough coins, you can talk to a NPC to trade your coins for maple weapons. But I would highly not recommed it because some monsters drop weapons.
Kill a monster and you will get one.
Golden flowers.
u have to be lvl 30 to do monster carnival party quest.
as far as I know, every monster in the monster book.