Attack of the Mega Tentacles

Looking to add a bit of Mythos magic to your Halloween decorating?  Calebkraft has the answer- giant inflatable tentacles.

In conjunction with Make he's posted a tutorial on YouTube showing how to turn some cheap plastic drop clothes and a box fan into immense, wavering tentacles.  It's essentially a DIY version of the giant inflatable lawn decorations available at big box stores.  Given how inexpensive the technique is there's a lot of room for experimentation.