This instructable will show you how to make a nifty flying model known as an ornithopter from cheap to free stuff.
An ornithopter is a lot like a model airplane, but it flaps its wings
like a bird or an insect, and is a lovely sight to watch in flight.
This is pretty easy to build; you really only have to make sure the bearings are all parallel. Everything else can be crooked and this will STILL fly just fine. It is also VERY sturdy and can take many, many crashes without breaking. As an added bonus (and due to my personal tightwaddery) it is CHEAP. You can make this ornithopter out of household items. Mine cost about $1.30 to make.
If you appreciate this instructible, please visit my blog for more ideas:GoodCleanCrazy
Bamboo Place Mat -- $1 at the local dollar store. We bought one too many for our table.
Gel Super Glue -- $1 for a 3 pack at the dollar store. Found it in a cupboard.
Plastic Grocery Bag -- Usually use them for tying up stinky diapers.
Coffee Filters -- Free from work (I don't drink coffee). And, no, I didn't steal them.
White School Glue
Clear Tape -- All free stuff I found lying around
CA accelerator -- $4 at the local hobby store.
Sets super glue almost instantly.