Blank Calendars for subpages

I would love to have the option to add a blank calendar in subpages where you can highlight certain days/weeks/etc. in order for planing certain events. I am currently planing an event but I am at the beginning of the planing phase which means that I currently have multiple options of when I want to do it. It would be very nice to visualize the possible days in an independent calendar.

Additional ideas for this feature:

• Maybe an option where you can show/hide the entries from the normal calendar
• Maybe a feature where you can add/remove certain entries to the regular calendar
• It would be great if a subpage calendar could be integrated in Toggle-Lists
• Maybe a feature where you can show timespans from multiple months (I mean an option where you can define that a subpage calendar should show only the days from the 14th of October to the 14th of November, so you are not forced to either see only October or November entries)

If you like the idea and have further ideas for this potential feature which I did not mention, feel free to add a comment and share your thoughts :)