When installing our flag around Memorial Day I found out our porch pillar was hollow, perfect for a time capsule. This past weekend we completed getting things together for it and I put it inside the pillar ready for the year 2042.
I made sure to separate everything using archival plastic (polyester, polypropylene or polyethylene), a plastic organizer container, and sealed it with silicone.
Here's a list of everything we put in: our appraisal, pictures of our deck construction from April, 1 dollar bill, 1 penny, 1 nickle, 1 dime, 1 quarter, last year's Christmas letter, architect drawing of the house, Google satellite view of house, letter to future us, questions about 2042, June editions of Hugo Citizen, St. Paul Pioneer Press, and White Bear Press, 2012 Minnesota Twins schedule, a Manitou Days button, and a picture of the family.
The Minnesota Historical Society web site provided some helpful information. To read more about the capsule as well as the questions I posed visit my web site.