Okay, I am a third time mom and I realize this - it doesn't matter, it doesn't help me!!! lol! My youngest is 2 years old and I remember going through similar things with my older two children around this age but nothing really works with her right now. I say she is 2 but she will be 2 in September. It's just easier than saying 22 months or whatever.
We go to the store and she will sit in the cart for 5 minutes and then it's "ownt out, ownt out" and if I don't let her she will proceed to un-snap belt around her waist (yes, she can do this) and then stand up or want in the back part of the cart where she will want to stand up. So I have to hold her in my arms and push the cart at this point, which lasts a few minutes before she is squirming and wanting to walk. Then if she walks there is no way I can control her because she will run away and start to look at me and smile and try to escape me. lol!! ugh! She goes to a part day preschool type class each week and I try to do things while she is there but I have two older children that occasionally like to go places in the evenings and weekends with me.
Forget going to restaurants because she would not sit still there either. And using a stroller doesn't help, same thing pretty much. I did use the race car cart at the store the other day but she had also just woke up from a nap on the way in the car so that may have helped as well, but she did really well in the race car. And one other time I gave her my cell phone to play with which worked through the check out lane.
It's so bad that one day we were in line and a lady walked up behind me with "1 item" to purchase and asked if she could go ahead of us and I told her my little one really needed to get out soon because she was fussy and I felt just horrible because I never do that. Any other time I would offer to let someone go before me like that. :-( But I was soooo embarrassed that day because little one had fussed through the store wanting to stand up in the cart and then walk and by the time I got to check out stand had I not given her my cell phone to piddle around with she would have been begging to walk and would have run away and across the store probably, embarrassing me.
I do know that in a few months to a year she will understand me better and this will all be behind me once she can listen to me and I can punish her and she knows what I'm doing and doesn't scream bloody murder because mommy is disciplining her in public, lol. But until then - any advice, ideas, opinions?