Do not throw away any leftover cheese. Wrapped in cling film, it will keep for a long time in the refrigerator - even longer in the freezer.
And whenever you feel like it, cut off a piece of cheese, for example for a cheese sandwich, vegetables au gratin or a cordon bleu.
By the way: Do you know the "Resty" from TTM? With this extension you can use up all the remaining cheese. Simply melt it until the end and enjoy.