DataStore Problem: Instances?

According to the roblox wiki, you cannot straightforwardly just store Instances over the DataStoreService while they are still an Instance, so I was curious to what would be the best alternative way of getting an Instance across multiple servers using DataStore. My ideas were:

1) Create a table of all the properties

2) Turn it into a string

3) Use JSON

Can anyone think of which would be best way to do, and how YOU would do it? And if you could think of some more ways, that would be even better.