Here is a super-duper big list of possible things to do this summer.
Find (and photograph) things that start with every letter of the alphabet. Make a book?
Make "play dough"
Gather and paint pet rocks
Make an appreciation card for someone
Find Shapes in the clouds
Create a water relay with household items
Create a family crest or flag
Build things with toothpicks and mini marshmallows
Make a day in the life picture book or video
Make a 52 things I like about you book. (or maybe just 5).
Create a diorama
Make fingerprint art or fingerprint art
Make an ATC or a set - trade them.
Sew a beanbag
Play a beanbag game.
Cross stitch your name.
Weave a pot holder
Make a braided headband
Bake a cake
Make a no-sew, t-shirt market bag.
Make a bookmark
Make a woven bracelet
Make a stamp
Make a paper basket
Go on a scavenger hunt
Go on a neighborhood photo scavenger hunt.
Make pinhole art, use a coloring book as a template.
Lay on your back and watch the clouds
Make a paper chain - write things you are thankful for on each link.
Make paper from recycled paper
Make fabric flowers
Do an experiment
Sew an apron
Create a city from a cardboard box
Sun Print Paper
Hot Rock Art
Book Exchange Party
Melty Crayon Art
Build an indoor fort
Make a Park Passport.