Monstrous Plaguebats (market GREEN on the map) - These are larger cousins of the normal Plaguebats. They occupy northern parts of the Eastern Plaguelands and drop Vendor Trash Items (Evil Bat Eye, Bat Ear, Sleek Bat Pelt, and Large Bat Fang), Wicked Claws (used in Leatherworking and Blacksmithing Recipes), and maybe some 16 Slot Bags. These can also be skinned for Rugged Leather, Thick Leather, Thick Hide, and Rugged Hide, so Skinning Profession is recommended for Farming them. Monstrous Plague bats have access to the Sonic Burst ability, which is a 10-second Silence, so they are not a good choice for Spellcasting Classes. Recommended Level - 56+.
Most people who have spent years playing massively multiplayer online games will tell you that there's something special about the first one you played, too—and WoW was the first for many people. You can become so swept up in the uniqueness of your first experience that you overlook many flaws. It's likely many look at WoW Classic with rose-colored glasses, just as many simply forgot which features were added when. And some of today's WoW players may be too young to have even played vanilla WoW as it once was.
There are more passive methods to gain wow classic gold, but these are slower. For example, many people choose to fish in places like Tanaris, or kill Harpies in Feralas and loot items such as mageweaves. These are rather AFK-able, but again, not as rewarding. Some people choose to favour fun over anything, and like in any MMO (massively multiplayer online game), the best way to have fun is playing games with friends or your guild. Dungeon runs with your friends provide social interaction and are definitely helpful over the long-term for your gold stack!
Tainted Oozes (market GREEN on the map) - Oozes infest Felwood in great numbers, and although they do not have too good Loot Table, they might be still worth Grinding. This spot is a long shot, so be warned. Felwood Oozes have a small chance to Drop Oozing Bag which in turn has a small chance to contain the Disgusting Oozeling Pet (this pet is used to throw off various Debuffs in Raids, so many Guilds will require you to have it), the Bag can also contain various Potions, Herbs, and Gems. Oozes themselves drop a lot of low-value Vendor Trash Items and some Pocket Money (they can also be Pickpocketed, so Rogues might be more interested in this spot). Recommended Level - 50+.
Check Item's Vendor Price before posting it on the Auction House - Selling items on the Auction House below their Vendor value is a common mistake. Avoid it like fire, and always make sure that you are not losing Gold on your Auctions. If you plan to sell an item on the AH for a price just a tiny bit higher than its Vendor value, you might be better off just vendoring the said item (this will allow you to avoid the risk of losing an Auction fee if your Item doesn't sell).
Loot everything - Every single item in the game has some value and you should take advantage of this fact. Grey items can be vendored for that little bit of extra pocket money and white stackable items are needed for crafting, which means that people will generally buy them if you post them on AH for low enough price (if you can't be bothered to post Auctions, you can just vendor all of them and be done with it). Some of the looted items will rise in value over time, so you might also want to take your time and store them on Bank Alt.
Some players have been surprised by these apparent flaws—even players who have been eagerly awaiting WoW Classic's release based on fond memories of vanilla WoW. In truth, it has been so long since WoW first released, players' memories may not always be accurate. Some details might be fresh, but others might be lost in time, and it's those lost details that could surprise players revisiting the original experience in WoW Classic.