You basically feel akin to Mr. Freeze.
Last week our AC was out, so my wife devised a way to make a quilt-like blanket that holds ICE PACKS! It's the ultimate heavy blanket, but keeps you cold at the same time. The other benefit is that during winter, she could heat the packs and create a warm blanket too. Overall, we both win during opposing seasons.
Things you'll need:
Fabric, something warm and comfortable, we used cotton and an old flannel sheet.
Batting (think sheets of cotton balls, used for padding)
Ice packs (somewhere between 10 and 40)
Sewing method (Machines in this case)
Generic sewing pieces (scissors, thread, pins, buttons, iron, etc)
Not terribly difficult overall, but time consuming. However, with the ability to lay and be chilled during hot summer months? It's worth it!
Also, I managed to talk my wife into trying this in her Etsy shop. If you want to get your own click the link here.
Step 1: Making the Master Pattern
You'll need measurements of what you want to cover with the blanket, and you'll need measurements of the ice packs you've chosen. We had a set of fairly standard 4x10 ice packs, and I had an old flannel blanket that was big enough folded in half.
Overall, there was enough room for ~40 ice packs; so, 40 pockets across a blanket that would end up being about the size of a twin bed.