I have been looking for ways to make gold off the lunar festival (most holidays are easier to profit off of). I finally found one! If you go to the Lunar Festival vendor in Moonglade (Valadar Starsong) he sells Elune’s Candle for 10 silver. These are unique so you can only hold one at a time sadly.
I purchased it. and hearthed to mail it to my bank alt (there is no Mailbox in Moonglade). I listed it for 5 g bid and 10g buy out and sold it in less than 10 hours. This may be a fluke but I am going to stock up on these to sell especially after the festival is over. They are fun little toy that shoots a firework at your target. This trick only uses minimal investment and in the worst case, I have a lot of these toys to play with through out the year.
Some tips, Your bank alt can only hold one at a time as well. He can store them in his mail though. Another thing is they can be placed in a guild bank (an unlimited number).
Now I have never done this before, and the one that sold was my first time trying it out. The listing fee is very cheap (72 copper), and the investment is really small.
Another way to obtain these is to fly back and forth to Winterspring to mail them. This can take quite a bit of time, but if you want to purchase/stock up on a lot of them at once, it can be one method to try.
I also have used my druid with inscription, he can teleport to right by the vendors, and use a scroll of recall every 15 min. But this costs money (the scrolls) I just had many of them laying around from leveling Inscription.
Another option to make this easier is if you have an engineer with a mailbox they can drop. I guess this is one of the few times engineers can be profitable!