what are some cool things a 10 year old could sell?

my sister wants 2 sell something awsome that 4-13 year olds would buy. do you have any ideas?

Blechmen5 years ago
Is this for school or something or just for money?
And does your sister have any talents or something that she is interested in.
She could go around (with a parent and ask what their kids like to do for fun)
frollard5 years ago
classic lemonade, but it really doesn't make much money.

candy...

problem is 4-13 year olds don't have much money to spend without allowance, so there is already competition in that field to get that hard-earned allowance from them.