Every Halloween, I wish I’d worked harder on my costume. If you, too, haven’t planned yours yet, here’s some inspiration from Warburg Realty. The company’s Tribeca office throws an annual Halloween hootenanny, and as you can see from these photos from past events, they dress to impress. “Wait till you see this year’s,” says senior V.P. and Tribeca sales manager Karen Gastiaburo. “We are officially in Halloween mode.” The event is Friday, Oct. 29, from 3 p.m. to 6:30 p.m., and the theme is “Monster Mash/Mad Scientists.” Warburg is at 100 Hudson (at Leonard), and everyone is welcome.