Visual for day camp (young children) and summer academy (ages through high school)

Information for the business: we open our summer programs to our community
Industry: Education
Design details: Independent K-12 school offers robust summer program. Two areas: a day camp for young children and a more academic summer academy which offers things like; science, art, law, local history, dance, etc.
looking for brochure cover art that shows many activities. wall paper style.
This sample is from stock images. Drop shadow on a layer. Images drawn in same style. OK to start from stock images. Like the style of the green melon.
Vector.
slide or swing
green oak leaf (our school symbol)
smiley face sun with black outline (reference available)
crayon or chalk
bright outdoor toy
swim bubble/goggles, or a little girl bathing suit with a cute 'skirt'
basketball
chemistry set: beaker/test tube?
chef hat and tool or something about cooking class
robot/coding
movie camera
bicycle
books
writing/editing (laptop?)
Target audience: children/ students/ their parents
Ideas for the visual style: colorful
Preferred colors: colorful/ summery/ bold/ fun/
Where the design will be used: cover of print catalog and web promotions
Extra notes: I can provide the illustrator file for the melon and butterflies, to be able to copy the shadow style.
Please show sample of your work so we can pick a style. It's oK to modify stock images... original art not necessary, but all to be done in same style.