Kit Nib

Where to buy or how high to low engine prop for Halloween?
Halloween is around the corner and I want to make a simple accessory that goes up and down books little by little (maybe 5-10, maybe less). Is there an inexpensive way to accomplish this? There are many engines running as available for the low price: http://cgi.ebay.com/Spinning-Motor-Halloween-Prop-KIT-Ready-to-Run-NIB_W0QQitemZ170145395955QQihZ007QQcategoryZ33801QQssPageNameZWDVWQQrdZ1QQcmdZViewItem be spinning as it was going from top to bottom, preferably several feet. Someone suggested I buy a toy and have the mechanism to release or create with my new decor but can only find this: http://www.apogeekits.com/santa_claus_xmsc4.htm I do not think it strong enough for weight, but is an example of what I'm doing. I think there are some "fall" of Halloween accessories, such as spiders and bats that also use batteries, but I need something to activate circulation, etc. Anything with a motor that I can connect the better. Thank you.
This site has links to accessories and tricks for Halloween, some with photos and most are fairly easy to make and not cheap too. http://www.halloweenmonsterlist.info/
Letraset – Tria : Customising Kit