In Winterspring, you will find Ice Thistle Yetis, which range around level 40. These mobs span a huge area around Everlook to the North and East. Ice Thistle Yetis constantly drop green items and vendor items, occasionally, you’ll get a nice blue or epic item. For those who are skinners, this is paradise. You can skin these mobs all day long for rugged and thick leather to sell on AH. And, with other players doing quests and grinding here, you will get a ton of leather off of them.
While you’re up around Everlook, you can head south and hit the Frostmaul Giants in Frostwhisper Gorge. Another group of elites, these mobs range from 59-60 and have a great drop rate for both green and blue items. They also have a high drop rate for the Greater Frost Protection Potion recipe, which sells nicely on AH for around 50 gold. But, these are mobs that are more suited for a Warlock or Hunter with a minion or pet, as they are not easy to solo.
You can keep heading south from Everlook, to the very bottom of the map for Winterspring and find Darkwhisper Gorge. Darkwhisper Gorge is home to the Hederine Slayer and Hederine Initiates, which are level 60 elites. These require a group, and are not to be soloed. Here is the reason that you’ll want to group these: they have a high drop rate for the Eye of Shadow, which sells on AH for over 200 gold; not to mention all the drops of Felcloth, Runecloth, and tons of green items.
There is an area in Winterspring near the lake where the Cobalt Dragons spawn. While these are elites, level 50-56, you can make a ton of money here. What you are looking for it the Mature Blue Dragon Sinews. These only drop like one every 1000 dragons slain, but they are an epic drop. These sell on the AH for 400+ gold EACH. And, while killing these, you will get a ton of great drops, like greens, blue/purples, and vendor items as well. So, killing that many dragons isn’t too much of a waste.