 Wash mega blocks and then put the jello in them and you … Mega Blocks! Wash mega blocks and then put the jello in them and you have Lego jello! Wash mega blocks and then put the jello in them and you … Mega … Lego Birthday Party, Birthday Parties, Birthday Ideas, Lego Parties, Kid Parties, 5th Birthday, Buffet Party, Mega Blocks, Boite A Lunch