You cannot make

happen. If you go looking for others to make your trip special, you will not be satisfied. Seriously, just be open to what is happening around you, take time to enjoy the scenery, teh people and your family's reactions. If you are kind, others respond to you.
Best

ever was when my lovely little DGD was pintrading. She was a thoughtful little girl, so every trade had a reason. Well, a castmember was watching her and gave her a special pin set, she was to keep one and then give one away. No trading! Was this the Pixiedust? No. Kady was only 5 or 6 YO, at the time, She saw a little girl with a few pins on her lanyard as we were heading to a character meet, veered off to give her a pin. The little girls Mom thought this was a trade, so she helped her DD choose a pin for Kady. We had forgotten about the "rule" but Kady had not, so she asked the little girl to choose another pin. DD explained what she was doing to the little girls' Mom.
For me, the pixiedust was not the gift the CM gave to Kady, it was how that gift impacted her. She was an honest little girl who had taken her instructions very seriously, looking for another special child to share her gift with. She really chose well, instinctively looking for a child who had very few pins, so that she could add to them. This pin was a not for trade pin, if was meant to be a gift. WE were the ones gifted, though.
I think what I am trying to say is that pixie dust is not the free cupcakes, the surprise FP, an upgrade. It is how your famiy responds to the magic all around you in WDW>