[MrE]

Don't know if I have a number one go to gadget, seems like I couldn't get by without a combination. :-)

I have a JVC digital media receiver that I paid under $90 for that has hands free bluetooth (I consider this a must), iPhone/iTouch/Android compatible, front USB and AUX connections. My wife loves audible books and they make the miles roll by really fast. With the USB connection I can load up a thumb drive with assorted music and put it on random-all and have hours/days of music. With the AUX connection I can listen to my portable XM radio.

I also have a WiFi hotspot app on my phone that allows me to use the laptop on the road. This works great for finding the best price on diesel, and then I use Google maps to route me there. This also works for restaurants, golf courses, RV dump stations, service facilities, etc.

I also have a Garmin GPS, I use this in conjunction with the Google maps. Google maps is more up to date, but wants to route you on side roads on occasion and I use the Garmin to decide which routing works out best.