It heat forms and bends easily. This bonds just fine using superglue or model cements. There are zillions of different plastic options out there today. These vary in cost, strength, and flexibility. Picking the wrong plastic for any AP is bound to cause you grief.
Foam core expanded versions make light and rigid displays.
It's available in many colors and patterns. It is also easily heat-formable. These cut easily with plain old scissors. It often outperforms nylon at a modest cost premium. This can be turned, milled, or otherwise cut up using normal shop tools.