I am going to show a sentence in Spanish.
The sentence is: "No olvides pegar el sello a la carta.".
I want you to generate a context in Spanish for this sentence with the following constraints:
It is forbbiden to include the sentence I first showed you or any words derivated from it.
It is forbbiden to include the following words: "olvidar", "pegar", "sello" or "carta".
The text must have a maximum of three sentences or 45 words.