This is simple project that you can do in 20 min. Its called Air conditioner in a bottle.
Its a simple Homemade air conditioner
Air blows directly over the ice and goes out.
Step 1: Things You Need
5l bottle or bigger
DC adapter (12V)
some connectons or 12V jack
Step 2: Mark and Cut
Put fan on bottle
Mark it on bottle
And cut the bottle
Step 3: Other Hole
Now enlarge output hole for air.
Simply pt fan on top mark and cut the hole.
Step 4: Make Connection
Make connecton for the fan. I used fuse jack and some twisted wire.
Step 5: FInish
Push the fan into the hole, put ice inside and plug it in.