Small items that are part of a set, like dice, cards, etc. can be assumed to be part of the same relic as their container - but they should be kept close to their container when removed.
This is not to mean you can tag a belt pouch to make various odds and ends within relics. Your pet rock will need its own tag.
Further Clarification:
Items in a character's direct possession remain with them in the umbra so long as they remain on their person or in their hand. That is how it currently works, relic or no.
Relic containers can be freely picked up while containing miscellaneous items, but those items aren't considered to be umbral unless the container is in the possession of a character in the umbra.
Items can not be taken from a freestanding relic container by a character in the umbra, unless they have Realm Grasp.
Relic containers do not convey relic status to its contents, unless they are small items that are part of a set.
If you have a relic pouch full of non-relic stuff, you can pick up the pouch and take the stuff out. The "stuff" is not considered relic, however, unless it conforms to the things mentioned above.
If you use Move Object to put stuff into a relic pouch, you can then pick the stuff up in the pouch.
The same goes for using Realm Grasp on non-relic pouches.
But try not to abuse this. Using Move Object 6 times to move six coins into a relic pouch is fine. Using Move Object 1 time to move a stick that you then use to move coins into a pouch is also fine, just keep in mind the rules of Move Object.
Using Move Object one time to try and move coins in a way that they fall into your outstretched palm to get around needing Realm Grasp is not ok.
