I had compiled this maintenance plan from a great thread (below) and was asked to post. The thread posts weren't all in the exact same format, so in some cases I was interpreting the post. In other cases, I was supplying missing information. I thought I would share my list. It isn't complete, but it's a start. If anyone cares to contribute to the list, I will be happy to update it. Please don't hesitate to tell me the intervals are incorrect. For now, consider it a work in progress.
You can create a local spreadsheet copy by highlighting all the spreadsheet cells starting in the upper left and dragging to the lower right, then right click and choose copy. Then just open a spreadsheet and click paste in the first row of the first column and choose paste. It should paste all the content and the formatting in the proper cells.
PS - If you would like to add an item and you have a "how to" or "why this interval" thread, please provide it and I will embed it in the spreadsheet.
PSS - For now, I will hang on the ownership of the spreadsheet, but would be happy to turn it over to Wayne or one of the moderators if they have any interest.
Long Term and Commonly Neglected Maintenance Thread