Not sure if anyone has already come up with these but here goes
#1
If you are out of marbles to put in waters for you new chicks you can us all thoses PESKY Legos (that you still manage to walk on even though your kids have not played with it for YEARS. - I could swear that like in Toy Story the toys become alive at night and spread Lego everywhere!!!)
LOL so many uses for Legos! I never knew.