Okay “must have” may be a bit strong but that’s still a cool and nice skullish selection 😉 At least those could be part of a much more bigger list. So let’s see what we have here…

• Door Knocker

You want your skull theme party to start right before they enter your house. Door knockers will tell your guests they’re at the right place. 2 options here, a budget one for Halloween…

… but if you’re really serious you can get this really cool skull door knocker

• Bag of Skulls

Just for having a touch of skull all around the house. Here’s a Bag of Skulls (12 count, 4″), be creative and place them strategically.

• Bottle openers

It’s a classic, but a skull wall bottle opener is going to be a real help when all your friends get a beer.

Alternatively I found those Killer Inked ones super cool. They come in various designs and colors but here is their “Phantom Skulls” model:

I even think you could have several and maybe offer those as gifts.

• Shot Glasses

Prefer something stronger than a beer? Then those shot glasses will make a great effect, and perfect container.
I found various styles that you may enjoy:

Get the Fred & Friends one or check out this 4-set in another style.

• Skull Ice Molds

Those are also super cool, and cheap! Check out these skull & bones one:

If you like more fancy stuff, those by ThinkGeek! may be the right molds for you.

Bonus:

Skeleton Restroom Door Cover

I couldn’t resist! Party is supposed to be fun, right? It’s just for the time of your Halloween party. Or not 😉