Creating a Ball python incubator?

In a year or two, I'm breeding my two Ball pythons. During this time, I'm researching as much as I can so I can be successful for my first time breeding. I already know how to create the container the eggs will be in, and I know what substrate to use and temperatures and just pretty much everything. I want to know how I can create a homemade incubator since I really don't have a lot of money to purchase one that has already been made. How can I create my own incubator, step by step directions? I don't want anything difficult to build because I'm not the best when it comes to putting things together correctly. If you have any pictures of what the incubator will look like, please put some up because I want to see what it looks like so I know where to put things and such. Thanks!
:snake:Tiffany:snake2:

Some great threads here on both Igloo cooler-types and modifying a fridge or freezer for a bigger version. Hit the DIY section for stickies about it....Or do a SEARCH. Most peeps here have posted all sorts of instructions and pics on the ones they've built.

Have fun looking and reading all the different ways. :)

RuLyn