Halloween item farming

Although they collect different items, all of the Horseman Collectors offer the same items:
Ghost-in-the-Box
Squash Serum
Transmogrifier Tonic (only those marked with * )
Vial of Absinthe
Witch's Brew
Ascalon City
Horseman Nurmangor collecting 3 Charr Carvings
Horseman Irimund collecting 2 Ornate Grawl Necklaces
Lion's Arch
Horseman Vulgamor collecting 3 Decayed Orr Emblems
Horseman Malfein collecting 2 Glowing Hearts
Horseman Sorcien collecting 1 Feathered Caromi Scalp
Henge of Denravi
Horseman Saralim collecting 2 Maguuma Manes
Horseman Darelum collecting 1 White Mantle Emblem
Kamadan
Horseman Naramor collecting 2 Mandragor Carapaces
* Horseman Garthim collecting 3 Sentient Roots
Horseman Aramon collecting 3 Juvenile Termite Legs
Champion's Dawn
Horseman Jaysin collecting 3 Copper Shillings
* Horseman Bishma collecting 3 Fledgling Skree Wings
Kodlonu Hamlet
Horseman Kronar collecting 3 Silver Bullion Coins
* Horseman Vadir collecting 1 Chunk of Drake Flesh
Sunspear Great Hall
Horseman Maxilus collecting 2 Mandragor Carapaces
* Horseman Nuher collecting 3 Sentient Roots Anyone know any viable farms taking advantage of these collectors so we can stock up early, if any?

Just try not to kill all enemies at once for better drops. I'm still amazed that people believe this. There was a great study done on it that proved that drops are determined when the map loads. Check it out here.

Back on topic:

It's already been mentioned about the gates of Kryta farm for decayed orr emblems so.... how about farming charr carvings! I'd either do that at the end of the Great Northern Wall, you know where you're supposed to run away from the charr, just turn around and there's a nice spot you can stop and they can't get by you. Or just do Nolani, crank open that gate and wipe out the charr that charge in at you.

Would it not just be more efficient to farm Raptors (or whatever) in HM for gold/drops n then just buy the alcohol off others at 100g per point?

I've not done any maths here so please feel free to prove me wrong. Hmm, let's say you can get 7k an hour farming Raptors, which seems a fairly conservative estimate. At 100g per point, that's 70 points of alcohol. Vials of Absinthe are one point a piece, so 70 Vials of Absinthe.

In order to get that many via the collectors, you'd need 210 Decayed Orr Emblems (or 140 Ornate Grawl Necklaces or 70 Feathered Caromi Scalps). That's an awful lot of collector drops in an hour. If I'm getting one per minute (60 an hour), I feel like I'm doing well. You will also make money farming these things at the same time, so that should be factored in as well. At 60 Decayed Orr Emblems per hour, you'd need to make up 50 Vials of Absinthe an hour to break even with Raptor farming, which would take 5k. For 60 Ornate Grawl Necklaces an hour, the numbers are 40 and 4k, and for 60 Feathered Caromi Scalps, 10 and 1k.

Although Raptor farming looks like it is more efficient, it's probably closer than you might imagine. If they start accepting Saurian Bones in trade, however, there's no contest.

Lastly, I wanted to bring up a point regarding Wintersday trading. A lot of people have been farming Decayed Orr Emblems with an eye toward getting Eggnogs. However, according to GuildWiki, you can trade Singed Gargoyle Skulls, Stormy Eyes, and a few other collector items for the far more potent Spiked Eggnogs (Eggnog = 1 pt., Spiked Eggnog = 5 pts.) Shouldn't you go that route instead?

I'm still amazed that people believe this. There was a great study done on it that proved that drops are determined when the map loads. Check it out here. I am amazed that anyone thinks that thread is anything to do with rate of kill! It isn't, its about drops being calculated on zone entry. Neither SoJ or SV are fast kills, hence the way above suposed Loot nerf drop rates shown in that thread. Try heavy nuking, trapping or EoE bombing and watch your drops turn to absolute zilch.

On topic:
Grawl necklaces: farm the level 3/4 grawl in Eastern Frontier, outside the Ruins of Surmia outpost. There are about 40 to be killed in 4 mins just by sneezing at them, any profession.