Here is a round up of easy and inexpensive Halloween Decorations you can craft with the link to the site with the how-to below the picture.
See Recycled Jug Skeleton and 1000's of others - or share your own on Cut Out + Keep
Make a spooky decoration out of Recycled Jugs
See Sock Skeletons and 1000's of others - or share your own on Cut Out + Keep
You can make sock skeleton(s) out of socks, button, embroidery thread or fabric paint and stuffing.
Dollar Store Crafts has a Halloween Wreath Roundup of links to inexpensive wreaths such as the "Nevermore" themed one and also features Mega Spooky's (who is participating in Countdown to Halloween)'s Coffee Filter Spider Web Garland that would be fun, cheap and easy to make and looks great.
See Spooky Halloween Goblet Out Of Soda Bottle and 1000's of others - or share your own on Cut Out + Keep
Make a Spooky Halloween Goblet out of a Plastic Bottle and some paint and a label.
See Jack O Lanterns And Ghost Lanterns and 1000's of others - or share your own on Cut Out + Keep
Make spooky Jack O Lantern and Ghost Lanterns with glass jars, tissue paper, mod podge and tea light candles or electric candles.
See Monster Guard Spray and 1000's of others - or share your own on Cut Out + Keep
Keep the monsters at bay with Monster Guard Spray made out of felt and a spray bottle. The recipe is distilled water and fragrance oil, but if you have younger children in the house you could fill with water with a few drops of fragrance.
See Halloween Tree and 1000's of others - or share your own on Cut Out + Keep
Make a Halloween Tree out of paper and white plastic bags.
See Halloween Bats and 1000's of others - or share your own on Cut Out + Keep
How about some Halloween Bats out of felt and using a hot glue gun to glue on the eyes.
If you have any or know of any easy and cheap decorations, please feel free to post them in the comments.
Happy Haunted Crafting!