I wanted to enter the Halloween contest and my wife really loves reading so we came up with some spooky bookish items together. 
This model includes all 3 items:

• The bat thumb page holder (this thumb holder has a wide thumb hole to make it work for even the largest hands.)
• the ghost bookmark
• the spiderweb bookmark and spider charm (the chain is not 3D printed)

I used a holographic effects sheet on all of these prints to add as much into the simple designs as possible. 

The ghost uses a glow in the dark filament I got off amazon from ziro. It works great in black light. The holo-effect sheet I used on  it is also from amazon because I likes the wavy/ ripple look it gave the print.

The chain I used to connect the web and spider is just a simple thin silver chain from the hobby store; so use whatever you like best. 

The Bat Page holder does require small supports on the bottom pointy bit so it isn't floating. The brim is optional but is loaded into the 3mf.

I'd love to know what I should test my skills on next.