Where can I find a 10+ pound, 3ft, snake shaped stuffed animal? 
Reason: I have cats which are not de-clawed who regularly claw up the
carpet at the bottom of my bedroom door when I shut the door (I guess
they think they are going to claw their way in).  I try to put stuff
there to keep them from doing it, but I don't have anything good.  It
needs to be at least 10 pounds, or the cats will be able to move it. 
I thought a snake stuffed animal or something would be a nice idea
since this is probably going to be a semi-permanent fixture to the
bottom of my bedroom door, I don't want to use bricks or anything like
that.  It needs to be something long and narrow, to cover the bottom
of the door only (ie. a snake which is not curvy, but can lie straight
as an arrow)  I am open to alternate suggestions, but mostly looking
for the snake stuffed animal.  I need to purchase this item, so it can
either be an online store or somewhere that does mail order.

tree stump

the first thing that came to mind was a door-draft blocker.  this is
basically a fabric tube stuffed with sand or rice, etc. they are as
long as a door is wide, maybe a bit longer.   many catalogs, including
Lillian Vernon, carry them and they're reasonably priced [under $10
usu.].  if you can sew, even by hand, you could make it yourself.  use
fake-fabric that looks like snakeskin - sew some goggly-eyes on it,
taper the "tail" and voila, you've got yourself a cat-repelling
snake....  you could also go to the hardware or home-improvement store
and get a brass kickplate - they are about 12" high and have a strip
at the top that screws onto the door.  virtually indestructible. 
there are also spray repellents you can use for furniture - i don't
know why they wouldn't work on the door, or maybe the carpet around
the door.  you'd have to be sure they wouldn't stain or otherwise harm
the fabric or your door.  finally, if your cats don't go outdoors or
have to defend themselves against other animals, you could ask your
vet about having them de-clawed?  that's all i could come up with. 
good luck!

Good suggestions.  The cats claw at the carpet at the bottom of the
door, not on the door itself.  If I dno't let them in, they'll just
sit at the door and meow and start clawing up the carpet until I let
them in.  I don't know if they realize that it's destructive and
annoying or if they are trying to dig a small hole under the door to
get through.

Hi Koosh!

My darling kitties did the same thing before they were declawed.  They
*are* trying to dig under to be with you!  When you close the door to
your cats, they think you're mad at them, and they want to come to
"apologize".

Cats are weird.  Aren't they terrific?

Anyway...a stuffed animal or door blocker may well keep your kitties
from damaging the carpet, but depending on what your blocker is
stuffed with and how sturdy the material is...you could be in for a
terrible mess.  Punzel's suggestion of a spray repellent is a good
one, and probably a better solution for you.

We used Boundary and Kitty-B-Gone to train our two felines to stop
certain behaviors - screen chewing, Christmas tree climbing, carpet
nibbling, couch burrowing.  Worked like a charm, took about a week to
break the bad habits.

Kitty repellent is usually between $5 and $7 a can, and is safe to use
around them.  It smells a little odd to humans (kind of like raw
onions), but it smells even worse to felines.  You might want to try
this first, before setting yourself up for a possible big mess.

--Missy

Another idea might be to buy something similar to this guy:

http://www.krittersinthemailbox.com/animals/snakes/waplt2170ch.htm

And then open him up, de-stuff him, and fill him with clean dry sand.
The biggest downside, as Missy points out, is that if your kitties
scratch through him, you're going to have a heckuva mess.

Or... you could take that same snake with his regular stuffing, and
apply velcro to him and to the door (or floor?) and stick him in
place. Of course you still have the same leakage problem if they claw
him - but less messy than sand.

Or..you could apply velcro to the kitties .. oh wait ..!  ;-)

-K~