Default [Q] Building a Dedicated Android GPS/Tracker

So I have my old rooted Tmobile S Blaze 4G and Want to build a dedicated GPS/Tracking device

something I can charge and leave in my car glove box so if its ever stolen I can find it.. also something to use on hiking/camping trips

The kicker needs to be No Data/Sim

anyone have any ideas?
Motorola Xoom ( Cyanogen 4.4.2 )
T-Mobile Samsung Galaxy S4 ( Fenny's 4.4.2 Stock TMO Rom )
T-Mobile Samsung Galaxy Light ( 2 x T-Mobile 4.2 - Non-Rooted )
T-Mobile Samsung Galaxy Blaze 4G ( 1 Rooted - 2 Non-Rooted )