Electronics? hah too perfect! Take yourself a small 2xAA battery box, mate it with 1-2 14500s (parallel for 2, but a harder fit), recess the connector to the best of your abilities and add the smallest normally off switch you can find. For the 5volt feel use LR attys or cartos. That way you don't need extra space for the electronics needed to drop the voltage.
Another way would be to use a TI voltage booster (ptn04050) with 1 14500 in a 2 battery box. You would still have enough space for the switch and a somewhat recessed connector, but your battery life would suffer. The good part is that you could use your standard resistance cartos or attys and have your 5 volts.
If you need any help or advice on modding feel free to pm me. ^_^
Edit: if you really don't feel up to building one just yet than any of the smaller mods produced professionally should work..just throw on a LR atty and youll be fine.
Another way would be to use a TI voltage booster (ptn04050) with 1 14500 in a 2 battery box. You would still have enough space for the switch and a somewhat recessed connector, but your battery life would suffer. The good part is that you could use your standard resistance cartos or attys and have your 5 volts.
If you need any help or advice on modding feel free to pm me. ^_^
Edit: if you really don't feel up to building one just yet than any of the smaller mods produced professionally should work..just throw on a LR atty and youll be fine.