Today we held the Omphalos Replacement and Dedication Ceremony, and placement of a new Time-Capsule. For those who could not be there, you have a week - until February 11th, 2018 - to add your item to the vessel.
Here's how:
Ensure that your item is Copyable and Transferable (it can be modifiable if you wish, but not necessary).
If you are not the creator of the item, then add your name into the description or item name so that people will know who donated it.
Go to the Omphalos monument and find the Grecian Urn located on top of it.
Go into edit on the urn, and slide your item into its contents. You MUST be wearing your CDS tag to do this.