I figured out to make a menu out to make a menu, that could be opened and closed. This is taking use of the players inventory. This menu can be useful for minigame- and mapmakers.

DISCLAIMER:
Simply Sarc made something similar on his channel called "Pocket Piano". I basically developed the idea further. He made the part that could detect the attributes, and I made it into a menu that also could have multiple pages.
Link: www.youtube.com/watch?v=OlKXm5wT8rc