When we want to remember something, we often say "let me make a mental note". However, there are other ways to express this intention as well. For instance, we can say "I will keep it in mind" or "I'll remember it". Another synonym is "commit to memory", which means to intentionally store information in our brains. Similarly, we can use the phrase "fix in one's memory" or "ingrain in one's mind". Lastly, "take note of" or "jot down" implies writing down something to prevent forgetting. Nonetheless, all these phrases convey the same meaning - to remember something important.