Soft drinks and a shopping trolley. The hair bands - well when I was a kid they were “lacca bands” (ie elastic bands) but that referred equally to rubber bands, which you do *not* want to put in your hair. No idea what they’re called now.
Soda, Pop and Soft drink are all acceptable, but Pop seems to be the most common.
Hair elastics, or just "elastics"
shopping cart or grocery cart....depending on the type of store you're in.