In the far future, tiny bots injected into the body can do great good-or great harm, depending on what kind of bots they are.
A class of cybernetic prosthetics worn over the face
Augscannens are common handheld devices used by security and law enforcement agencies
A small, enchanted chest, 2 feet on a side. It is of some dark wood with fantastical images graved upon it. Worn leather straps act as hinges and a simple toggle keeps it closed. Anything placed within it, with the lid closed, becomes accessible to anyone with one of the other 5 identical chests. Once it is taken out of any one of the 6, the chest is empty again. Perfect for passing messages or small items between widespread groups, such as ships at sea and their ports of call or generals on the field of battle.