device 125 not pictured as well as optionally other elements such as a battery or other tool in certain embodiments insert 113 has a hole in it in certain embodiments shaft 113 has a hole through it in certain embodiments a wire extends through a hole in insert 129 and shaft 113 connecting a device 125 within insert 129 to some other element in club 101 in some embodiments insert 129 further contains an additional dampening material e g a foam or polymer and device 125 may be dimensioned like a grain of rice e g the rfid microchip sold as the unique device identifier udi by veriteq delray beach fla fig1 shows another embodiment of insert 129 here insert 129 may be provided in the illustrated form to provide substantial protection and vibration dampening to device 125 it is reported that some prior art attempts to locate electronic devices in the grip region of a golf club meet with failure apparently due to shock waves whereby discontinuities in pressure or energy propagate rapidly through a club in connection with use of the club insert 129 may provide a viscoelastic dampening material such as thermoplastic polyurethane a springy foam d30 or a thixotropic material to mitigate stresses associated with use.