Hey, I found this really awesome Etsy listing at https://www.etsy.com/listing/268098852/outer-space-party-invitation
Could make these favors with TP rolls and scrapbook paper
Out of this World Girl! Outer Space Party Invitation
Fruity rockets for space party - they are slightly phallic though..
rocket dog idea for a space party
Rocket cake at a Space Party #space #partycake
DIY Jet Packs from soda bottles for rocket ship birthday party #outerspace #rocket party
Rocket Ship Birthday Party
Space Birthday Party Invitations Boys Rocket by PaperCleverParty
Rocket ship cake from parenting.com. I've used one of their cake ideas before, and it turned out amazing.