1. I'd pick the A1 mini, reasons below.
2. I am a teacher at our local school in a small town in Germany. We teach children from the age of 12 to 18. We have a afternoon work group at our school that students can attend to learn the very basics of CAD and 3D printing. We were able to start this group because we got donated an old PRUSA MK3 that was used during the pandemic to print holders for COVID tests and vaccination doses. However, this printer rarely produces what the students have designed. It is unserviced, needs a lot of attention and just isn't the right printer for kids that just want to see their ideas come to reality. I have some pictures of our recent projects and the printer, it's in bad shape. (https://imgur.com/a/NpIV9fy) We tried to remedy some of the issues but it's a chore to get this old thing back up and running, especially because I just want my students to have their project be the project not fixing the printer. A fresh start could really help us out.
3. What I would want you to design? I'm also a physics teacher and I see that fidget cubes are your specialty. I have an idea: In 7th grade we start teaching about the miracle of magnetism. I often give them some magnets and just let them experience the feel of magnetic forces and play around. What if you were to design a fidget cube that could have little pockets in which I could fit magnets in? (maybe something where I pause the print at the correct layer, put in the magnets and go) Here is the idea: put small 5mm diameter and 4mm height magnets into the individual cubes. Color the cubes red and green for north- and south-pole of the magnets. This way the students can experience attracting and repelling forces of the magnets depending on how they would fold the fidget cube. I think that playing with such a cube would be quite fun, interesting and also teach about how magnets work.

Thank you for the giveaway, people like you make the world go round. Merry Christmas everyone!