Ozark Trail from Wal-Wort around $5. Similar to this;
http://www.flickr.com/photos/forrestcook/54521779/
Engineer Compass a friend gave me. Similar to this;
http://www.kitefarm.com/oregontrailm.../23d3c8760.jpg
But, my sighting wire not broke.
For wind I made an Arrow looking thing mounted top of mast to spin around easy.
For a Depth Finder. My favorite is a weight on a rope that have Knots tied every one foot (Lead Line) but, I do keep a Sounding pole for quick measures.
For boat speed (Dutchman's Log).
The above, I never had a battery go dead or something get out of adjustment.
A friend has been trying to make me a Wind Speed "Thing-a-ma-jig" (Whirly Gig) and connect it to an old Bicycle Speedometer (I guess).

He said I will see it, when he gets it to work and knows it is fairly accurate. I am excited to say the least.
I did have a Hand Held GPS. Garmin eTrex. Similar to this;
http://www.mobilewhack.com/images/ga...end_cx_gps.jpg
But, it not have an external antenna jack, so, I took it back. I will get one cost a little more with an external antenna jack and more memory.
OK, I guess no one wants to hear about my Sextant.