Invitation - DIY in Photoshop, printed on cardstock; copied from an Instagram I can't seem to find anymore :/
Orange Envelopes - Office Max
Big Hot Air Balloon - DIY; Japanese paper lantern, colored tissue paper for the stripes, yarn, half an oatmeal container for the basket
Circle Garlands - DIY
Party Hat - free printable from mrprintables.com/printable-party-hats-stripes.html, DIY yarn pompom
Little Hot Air Balloons - DIY; mini Japanese lanterns, mini cupcake liners
Cake Topper - DIY; mini Japanese lantern, toothpicks, mini cupcake
Pretzel Hugs - sallysbakingaddiction.com/2012/03/12/pretzel-hugs/
Popcorn Containers - Target
Stripey Straws - Target