A gathering of two to five tools. See toolshed.
A: How about when I got on the elevator this morning right before the doors shut three of the most obnoxious partners at the firm got on?
B: Are you kidding? I love starting the morning in a toolkit.
The collective noun for someone in possession of many toolish features or aspects of their personality. One with a high level of toolism.
Ben: That guy over there is a loser.
Lachie: An absolute toolkit if i don't say so myself.