Danielson frog and fish spears can be obtained over the net from
http://www.outdoorsuperstore.com. They have from three to five tines. Over the net, they cost two to three times more, ie $2.25 to $10.00. I recommend searching through the bargain bin at your local sporting goods store.
For those that want a flat spear, just squeze the ferrule in a vice.
Where I go, frogs are not abundant enought to spend a lot of money, weight, or space in an extended survival kit. Therefore I use the smallest and cheapest I can find.
What I am looking for is a small collapsible crawdad trap that I can include in my extended kit. All the ones I found so far are a little to big. Some of Eastern Oregon lakes have abundant crawdads. I keep large crawdad traps in my RV.