We have ours hanging and it slowly spins.  So cool.

To make it, I had S cut several different lengths of white yarn.  I emptied some washable school glue (aka PVA glue) onto a plastic lid (a plate would also work) and laid out some sheets of wax paper for her.  S dipped each piece of yarn into the glue until it was totally coated and then laid the glue-covered yarn in a spiderweb pattern on the wax paper.  Once she laid the first piece of yarn, I told her to always make sure that the piece she was putting down was touching at least one other length of yarn.  This ensured that her final web would be one full piece.

Here is an aerial shot of her finished web.  I gave her two plastic spiders to add and she pressed them into the glue-y yarn and we left the web out to dry for 24 hours.

After 24 hours, I checked to be sure it was all dry and peeled the wax paper off the back.  Then I used some clear fishing line to make a loop for hanging and hung it up to spooky-up our house.  :)

All activities here are activities I feel are safe for my own children.  As your child's parents/guardians, you will need to decide what you feel is safe for your family.  I always encourage contacting your child's pediatrician for guidance if you are not sure about the safety/age appropriateness of an activity. All activities on this blog are intended to be performed with adult supervision.  Appropriate and reasonable caution should be used when activities call for the use of materials that could potentially be harmful, such as scissors, or items that could present a choking risk (small items), or a drowning risk (water activities), and with introducing a new food/ingredient to a child (allergies).  Observe caution and safety at all times.  The author and blog disclaim liability for any damage, mishap, or injury that may occur from engaging in any of these activities on this blog.