When we first started letting the kid have treats, I’d start him off with a very small portion. Then, when he would try to bargain with me, I’d put on a big show of reluctance and finally “agree” to a slightly-larger-but-still-very-small portion. “Can I have jellybeans?” “Sure! Here you go: two jellybeans.” “Can I have three?” (I heave a big sigh, slowly nod my head.) “Okay. You’ve been really good today, so… I guess it’s okay if you have three.” He got to feel like he won, and now he blithely accepts that the typical serving of m&m’s, jellybeans, potato chips, etc. is two. Five is a veritable bonanza.
I recently talked to a dad who does something similar, but with a twist. They only keep a tiny amount of a treat where the kid can see it; the rest is hidden away. So when the kid asks for some, they say, “Sure! You can have all of it!” Score!
We also called it the “music truck” for a while, but it didn’t last long. We were at the playground one day, and a truck came by and parked just a few yards away. Kiddo watched as some kids ran to the truck and walked away with their ice cream, and a door opened in his mind. He looked at them, then back at the truck, then back at the kids, then at me, as if to say, “Did you see that?!” Then he stared hard at the truck again and, with a solemn and passionate resolve I would not have thought a 2-1/2-year-old capable of, the sort that is usually employed only in phrases beginning with, “As God is my witness…”, he said, “I want them to give me ice cream.” “Oh, sorry, honey. They don’t just give it away; you have to give them money.” He looked back at me: “Give them money.” He was so intensely serious that I couldn’t help but laugh, and it was all over.
A little thing, that made a big difference to me: when he was learning to walk, I realized that holding his hand in the normal way wasn’t very secure. My hand was too broad for him to grip, and it was too easy for him to slip his fingers away from me when crossing a street, in a parking lot, etc. Instead, I have him hold onto my index finger, but I then wrap the rest of my fingers around his wrist - something like this, but with a much tighter grip. It’s easier for him to hold onto me, and much harder for him to slip away.
One that I came up with when babysitting for friends, but it works on my kid, too: they had been told to clean up their playroom, which had a dense carpet of toys, and they weren’t making much headway. So I said, “How fast can you find all the red toys? Who can find the most?” They ran around grabbing up armfuls of toys - “Does this count? It’s got red stripes!” - and when they were done, we threw them all in the bin. Immediately, they said, “What about blue? Can we do blue next?” “Okay, blue… go!” And so on. The room was tidy in ten minutes, tops. It was a thing of beauty.
And one I learned from those same friends: when a kid sees something in a store and says, “Oh, this is so cool!” instead of jumping directly to, “No, you can’t have it,” just agree with them. “Yeah! That is cool! I love the way it [does whatever].” Then go on your merry way. Also, make a point of admiring things for yourself that you don’t buy. “Isn’t this a cool hat? How does it look on me? Okay, let’s put it back, and we’ll go buy you some new socks.” Internalizing the idea that you can enjoy, appreciate, and even desire something without having to own it goes a long way toward combating the “gimmies”.