What do those meaningful ways look like?
Depends on the person. Meaning is subjective and derived from a person's own perspective. Any gesture will have some value but when you take a little extra time to really understand your team on an individual level than you can give real
meaningful recognition - as a result your team becomes more invested and then you use that investment to build success. You use that success to talk that team up to others, and build the team. The team uses that to bond as a cohesive unit despite being a disparate group of individuals - it fosters a sense of team.
I had a girl who was extremely shy but loved baking, I was out thrifting and came across a copy of an old BHG cookbook with a lot of cool baking recipes in it, so I picked it up and gave it to her. No team-wide stuff, just "Hey I know you really love baking, I was out and saw this, I thought you might really enjoy it and it would be a good way to say thanks for all the hard work you do."
I had a guy who was phenomenal in the back, always handled frozen and kept it clean, never complained about anything. Just all around crushed it. He was big into hunting and trained bird dogs, he had gotten a new puppy and was excited the first time he took him out and the pup did really well. I snagged a pic off of his wifes facebook, got a little stuffed dog, and we made a shadowbox with a little "congrats" for the pup and had the team sign it and give it to him as a thanks. That one actually cost me a little money and time but he was to this day one of the best people who has ever worked for me in any industry. (edit to say if anyone from this store is on this forum you will definitely know who I am now).
I had an older lady who had been on the flow team for like ages, had a lot of knowledge. Took time fairly often to just talk to her one on one and ask her opinions on certain processes, how she might change them or make them better given her perspective and the amount of time she had on the team. Not a materialistic person and very pragmatic but recognizing her experience and value was very effective as a form of recognition.
In the role I have now (scrum master for software dev teams) I interface with more white collar professionals and more often than not, the most impactful thing you can do to recognize them is just to listen. Take time in your day to just say hey, great job on xyz,
is there anything I can do for you today?