Water gun party (another fun summer idea)
Dress it up a bit and use nerf or water guns for a game at reception.
Water Gun Party for Summer or a Kids Birthday - FUN!
Water Gun Birthday Invitation Water Party by DaLiMiCreative
Nerf party...cardboard barricades...use wooden sticks stapled to cardboard pieces and stuck in the ground....
Tutorial / Squirt gun refill station
Nerf Party Games, Obstacle Course — Hello My Sweet
Water Squirt Gun Party Welcome Sign INSTANT by M2MPartyDesigns
Boys Water Gun Party -- 15 Printed Invitations by cranberrydesign
Water Gun Birthday Invitation, Water Gun Invitation, Boy Water Party Invitation, Squirt Gun Party, Personalized, Chalkboard (CKB.494) by everjolly on Etsy https://www.etsy.com/listing/294157697/water-gun-birthday-invitation-water-gun