[Dragon Princess]

You can find pretty much a lot of types of Plexiglas or PVC at local hardware stores, my team tends to stick to Home Depot more than anywhere else.

But for loading electrical items its probably best to use some thing non conductible and sturdy (nothing that could break or shatter), and to hold down everything with screws and keep it a safe distance up.

In past years my team has built a little cage to keep the electronics safe, but as long as its further from where the balls can reach, or higher then hitting its self going over a bump your pretty safe as far as placement goes.