Some guild recommendations (Dont care about the intro lets just get to the point):

Bulletin board - can be bought so that guild masters and officers can post longer messages and stuff.

Promotion expanders - allows guilds to expand their promotions, giving them names, privileges, and constraints.

Jail room - a place where guildies are sent who do bad things and it cuts them off from the rest of the guild (they automatically spawn there every time they join the guild hall)

Chef NPC's - chefs that can be assigned to areas and will chop up goodies if they're around a table, or counter.

Custom maid NPC's - might be the most expensive thing to get in your guild but it'll be awesome once your guild has awesome maids giving you cookies! plus you design how they look giving them accessories, and armor.

Floor surfers - small robots that do many tasks. What are they here for? Vacuum cleaners? Surveillance cameras? Floor slugs? Its all up to you to decide but over all they would crawl along the edges of your guild hall and if placed in the center of a room they will roam around that area ONLY.

Fountain - a sexy looking fountain for a sexy looking guild.

guild monster pets - when your monster pocket just gets too big to chill in your pocket it needs a place to stay. So why not let it chill in your guild? Because you've loved it so much they become submissive to Knights and will fallow the owner around the guild hall.

Shelves - a thing to put on the walls of your guild hall, when you click on it you get the option to display one item from your inventory at a time to hang on the shelf.