I made this for a Valentine's gift for my oldest son. We always used to say "Love you more" to each other when I put him to bed at night...over 30 years ago! I think he will get a kick out of this.
I used a 16-inch MDF round (6mm) purchased from https://kandgmakeit.com. They offer bulk pricing if you ask
The cuts were made using 19" X 12" 3 mm MDF purchased from https://bigbluelaserdesigns.com. They go on sale several sales during the year and the 30-piece case pricing is awesome and shipping is very reasonable.
Both of the suppliers I mentioned above use high-quality MDF that cuts great.
The project is easy to resize to suit your needs.
I primed the MDF with a sprayed-on clear coat. I painted everything white first, then selected the pieces I wanted to be red and gave them two coats. I read somewhere that a coat of white paint under red will make the red pop more and I think it does.
I glued the cut pieces to the MDF round with Starbond Thick glue (Amazon) and then added a little bow to the ribbon hanger.