Could you develop a program for library Summer Reading Programs?
When I ran our SRP, I booked 6 or 7 different weekly presenters/programs. There's a national theme each year, so we try to match programs to themes, but most presenters find a way to work a theme into their programs. My 3 county system contains 23 libraries all booking weekly programs; larger libraries with bigger budgets may book daily programs.
Don't know your field, but some of our presenters are in education: storytelling, science experiments (bubble gum & ice cream), writing workshops, improv, juggling, magic, music and dance, building things that fly (boomerang made from hardware store paint sticks, catapult from coathangers and rubberbands and plastic spoons, tissue paper gliders), police dogs, wildlife rehabilitation center, zoo animals, aquarium animals, bats, spiders, Erie canal history and artefacts...
This year's theme (for elementary kids) is "Building a Better World". Lots of room for experimentation and interpretation. I'm planning an in-house STEM program building simple mechanical devices like wind mills. The kids are also excited about coding - there's a Scratch club at school. So building virtually is another option.
There are also related themes for teens/YA, and adults. We focus on kids only, but larger libraries have programs for all three age levels.
ETA: I remembered a few more areas we want to branch into or have recently started - craft of all kinds (paint and sips, coloring pages, paper ornaments for Xmas, duct tape wallets, paracord bracelets, etc) , escape rooms (we just got a kit, and are planning programs for break), hula hooping.
I ran a drama club for the teens a few years back, too.