EADLs (Electronic Aids for Daily Living) provide control of devices in the environment, such as toys, electronic devices, lights, and simple appliances.
Switch Toys can be expensive, but you can adapt your own with a battery interrupter.
Power Link 4 is an environmental control unit that helps teach students concepts of cause & effect.
You may have a Powerlink 2 in your classroom. You can still use it!
Ideas for using the PowerLink
Switch/Latch Timers add modes of control (times, latch, direct) to any switch accessible toy or appliance.