The TechnoKats have a permanent full-size field, built basically as the prototype for the low-cost
FRC Wooden Field. Every few years we manage to take home the carpet from a regional or offseason event, so it's in pretty good shape. We strive to build all the game-specific components each year.
It gets disassembled and transported to Indianapolis every summer to serve as the practice field at the Indiana Robotics Invitational.