I haven't tried one yet, but I have professional and hobby experience in 3d printers. Bambu sounds like the best plug-n-play option. Especially with kids, you want something that will just work with the most minimal of tinkering. That said, 3d printing is sort of an inherently finicky process so be prepared for some shenanigans. I think the bambu will reduce that significantly, and another noted that they use one and its just plug and print, which is amazing. The resin printers are neat too, extremely high resolution, but not the best for kids to use. I should also note that to really take advantage of 3d printing, having some experience in 3d modeling is a huge plus. If you don't, then your just printing stuff you find online and it may be frustrating that you can't customize or build your own toys/tools. But, it could be the catalyst for that interest and it's easier than ever to pickup some basic modeling skills.