Here are some 4th of July ideas:
some easy ones
and i just love these hands:

no explanation needed, just some red and
blue paint and an old sheet!

Get some stars to eat out of a water melon, yummy!!

How about this fun fire cracker?
You find instructions here:

get out your coloring stuff
after printing this vintage image.
There are many more to find around the web
and they are all listed here:
After eating lots of popsicles, how about making
the sticks into this cool, flag?
Tutorial is here:

With a toilet roll and a template this
is quickly made up.
You find instructions here:

you find this free subway art here: