One of the new achievement's for Hallow's End requires you to be hit by the various holiday wands: bat, ghost, skeleton, etc.
On any of your toons , go to an Innkeeper and "Trick or Treat". If you receive a Treat Bag, open it up and hopefully you will receive a Hallowed Wand. If not, re-do it on all your characters. You can do this once per hour, and the cooldown will be applied whether you are logged into the game or not.
If you get a wand, advertise in /2. "Selling Hallowed Wand - Leper Gnome, 10g". I had about 8 tells the first time I did this, and received 50g in seconds. I've only farmed about 250g today, but it required no more work than a quick message in /2.
Also, because of Achievements, the Headless Horseman's mount and the Squashling pet are very popular this year. The headless horseman is easily 3mannable (or 2mannable), but takes your daily quest.
Get a group of 3 people and every day do the quest. When you are done, advertise for other people to do it with you (and use their cooldowns). Not everyone will come, but we got about 10-15 people to do it today. This is really easy if you have a warlock to summon.
Advertise in /4 (LFG). Say something like this: "LF1M for Headless Horseman, level 65+. Free lv70 epics!"
You can get plenty of level 65-69 players who will come for the chance at epics. Just put Master Looter on and take the squashling/mount for your group. If it is the person's first time in SMGY, tell them to go to Brill and get the quest "The Headless Horseman". This will give them 2 summons (but only 1 every day after that).
I managed to get my mount today in about 15 runs, and my 2 partners plan to get theirs before the end of Hallow's End. No pet drops yet, but hopefully soon =)