What are some cool things to sell other than lemonade at lemonade stands?
multiple things in answer !

Water, candy,ticketa[for movies and that stuff],ice cream, juice,[Natural apple or orange juice, gatorade powerade],games,movies hats, shirts, controllers for the games,...

Hotdogs, candy, water, shirts, toyish things 
you can kind of make it into a garage sale

Answer such tools are fail proof;

  consider  the  following scenario,  then describe  how  you might conduct  a  study using  ansrs,  convenience sample, and a  voluntary response sample.  you  are  interested  in  parents'  opinion  of the  war  in  iraq.  your population  is  parents  of  high school students.  your question  is, "do you  believe that the  war  in