NUH, New User Helper.
NUH scripts are made to make post-installation easier, currently only for Ubuntu Desktop 24.04 and Ubuntu Budgie 24.04.
These scripts were made with the "Default selection" installation of Ubuntu Desktop and the "minimized" installation of Ubuntu Budgie in mind.
You just need to use this command in the terminal and then several things will be done, such as adding Flatpak with Flathub, setting thumbnails for videos and music files, certain theme settings and installing several useful applications.
When the script is finished, reboot the system.
wget https://github.com/Kyuyrii/NUH-Scripts/releases/download/NUH-Ubuntu-24.04/NUH-UB-2404.tar.gz && tar -xvzf NUH-UB-2404.tar.gz && ./NUH-UB-2404/NUH-UB.sh
wget https://github.com/Kyuyrii/NUH-Scripts/releases/download/NUH-Ubuntu-24.04/NUH-UD-2404.tar.gz && tar -xvzf NUH-UD-2404.tar.gz && ./NUH-UD-2404/NUH-UD.sh