Crafting a birthday party on a shoestring while keeping it fun

My daughter’s 7th birthday is coming up, and with our tight budget after unexpected car repairs, I’m trying to throw a memorable party without breaking the bank. I’ve already booked our local park pavilion since it’s free, but I’m struggling with affordable yet engaging activities that don’t require pricey supplies or rentals. I tried a DIY craft station with supplies we had at home, but it didn’t hold the kids’ attention for long. I want the party to feel special for her and her friends, but I’m wary of spending on gimmicks or elaborate decorations that won’t last. Has anyone found creative, low-cost ways to keep a group of energetic 7-year-olds entertained outdoors? What simple party favors or treats have you pulled off without splurging? I’m hoping to hear ideas that don’t involve buying kits or renting equipment but still bring that birthday magic.