I use my ele for farming wintersday stuff. There are 2 main farms I do: Grawl and Gargoyles. The grawl are the ones right outside of Ruins of Surmia.
12+3+1 earth, 9 Fire, 9+1 energy (just my default earth armor) with a Droknar's Earth Staff (or w/e you want, I just like the +20%ench)
My full bar is:
Stone Daggers
Stoneflesh
Shockwave
Sliver Armor
Flame Djinn's Haste
Elemental Lord
Aura of Restoration
Earth Attunement
Gather the first two groups right outside of the portal and use shockwave (u don't have to pre-cast the enchants yet, I'm not that patient

) Cast the enchants, move north and get the group or 2 right before the coliseum thing. Then gather all the grawl in or near the coliseum. This is where you need stoneflesh, there will be 20-30 of them. Run up to a group of healers and hit shockwave. Use stone daggers/sliver/djinn haste to mop up the stragglers. Move up and get the remaining 3-4 groups and you're done. Total time, 3 minutes, 5-8 necklaces per run. I've found that lots of dyes drop here, Black and White. I know what you may be thinking: killing one at a time gives more drops. Normally, I'd agree with you. I used to run Glyph of Renewal and Sliver, but I SWEAR this gives you more drops. I don't understand it, but there it is!
For Gargoyles, I use a E/Mo build
6 Air
12+3+1 earth
6+1 energy storage
10 Healing
Healing Breeze
Stoneflesh
Glyph of Renewal
Sliver Armor
Windborne Speed
Elemental Lord
Aura of Restoration
Balthazar's Spirit (optional)
Run to the first gargoyles, cast enchants (incl stoneflesh), gather up everything near the stairs (maybe 1 group by the bridge) and run up the stairs. Grab the boss' group, and run back down the stairs partway to stack them up. Run up to them, hit glyph and sliver, cast sliver again if needed. Run up the second set of stairs, gather everything, stack them in the doorway, repeat killing. Run down the stairs, into the room, back towards the stairs, turn left and gather everything up by the T-intersection. Repeat killing. That's as far as I go. Everything else is too spread out, IMO, it becomes more running than killing. Any speed boost will work, I like Windborne for the fast recharge.
There may be other builds out there, but these work for me. I like the Grawl farm better, because I'm impatient and can't stand snares! The gargoyle farm has the nice bennie of giving granite and scales, too, 1 or 2 at a time
Enjoy
Wombatt