H.T.
Hi Megan,
I am a mother of 4 and step mom to 3 so once upon a time I would take 6 of them shopping with me with the two younger ones both being 2 and the next set being 4 and then 6 (not twins just good timing with his kids and mine). I leaerned with my own boys whe they were two who hated shopping and sitting in the cart, when I got to Walmart or a grocery store, i gave them each 75 cents and they held that through the store, if they were naughty i took a quarter away, they had 3 strikes. if they managed to have money left we stopped and they either rode one of the little ride on toys there or got to get something out of the machines. it worked like a charm. i now use this method with my 9 yr old still as he gets rambuctious at the store (adhd). i also used snacks. i would go in and buy a bag of grapes or a box of animal crackers and paid for them asap and the let the kdis munch while we shopped. with 7 kids in tow you had to get creative.
good luck
H.