These are some godsent tools which you could use to make a rudimentary UI structure as quickly as possible. But these tools mostly spit out cookie cutter shadcn slop which will look extremely generic (think streamlit apps) and you will have trouble standing out from the rest of the participants at the hackathon. Remember to put in extra work and try to make the UI look different, elegant and as bespoke as possible. These tools will not cut it.