How to go shopping with toddler in tow

I HAVE a very active two-and-a-half year old son. It is very challenging to go shopping with him. He is quite a handful in the stores, and is very loud and demanding. 

We used to take him out in a stroller. These days, he would resist getting into the stroller. He wants to walk around like us. I don’t want him to run around and start breaking things in the shops.

Any tips on how to shop with a toddler without him breaking into tantrums or drawing angry stares from shopkeepers? – Mother Of A Toddler