Try looking at teenpartyideas.com they have the best slumber party ideas ever and it comes with all the details you need.
Veggies, pizza, fruit salad, jello, deviled eggs, pasta or potato salads
Funny movies, & scary!
Make your invitations at Meijer it's reasonably priced
Is this a birthday slumber party? If not, I would skip invitations, but if you're set on having them ask a parent if they will to take you to a stationary store, or etc. (I forgot you're Canadian. Ignore what I said about Target- it's a U.S store)
I can't give you a lot of movie ideas because I'm older than you are. And I just thought of this: I would suggest waiting until your friends get there or ask beforehand what movie they want. It's more fun for everybody to have a say in what want to watch.
Truth or dare is a very good game.
Candy, chips, cookies, brownies, ice cream, etc. Go to the grocery store and look at the junk food aisles and pick what looks best to you.
lots of pizza rolls, cookies, pretzels, chips, and then maybe some healthy stuff too like carrots or something. also, truth and dare is fun but can only go so far. try never have i ever too
Have some chips (cheddar sour cream or onion sour cream chip- my favorite), have cookies or cupcakes, ice cream, have topping for ice cream like, whipped cream chocolate chip, toffe bits, syrups, candy, Oreo cookies
You can find a variety of Invitations that can be customized to suit your needs.
Invitations - http://www.invitation-templates.net
So iam throwing a slumber party with my friends what kind of snacks,movie,ect or invitation cards should i have and is thrush or dare a good game to play