Compressed Air Energy Storage for Create. An Air Engine banks your network's surplus rotational power as compressed air, then hands it back as torque when the network runs short.
A Gravity Battery stores your network's surplus rotational power by winding a glued weight up a shaft, then lets it back down to drive the shaft when the network runs short.
Handheld tools that run off your Create backtank: a drill, a jackhammer, a 3x3 tunneller, a 5x5 borer, a tree-felling saw, a grinder, a buffer, a vacuum wand, and a wrench that powers a kinetic network while you hold it.
