For me it was not about the interaction between the hole and the pocket dimension. It was about can a familiar generally take stuff with it when it’s dismissed into its pocket dimension.
For that there is the sage advice ThatGuyTed has written about pretty clear.
I also like the way you thought about it. The familiar can take all mundane (non magical) items which where present at its summoning with it when it’s dismissed.
(@katnyx) Mardred (probably spelled horrible wrong ) got the following story reward:
You brought 4 eggs and 2 grown up blue guard drakes back to Z’Neth at the wandering emporium and overfull-filed the contract with her. As a reward she would help you with her vast knowledge to imprint and bond with one of the newly hatched drakes.
hope you had as much fun as myself and on this note. “Is it Friday yet?”
You all managed to acquire vital information from the scholars at Candlekeep to help deal with the Meenlock infestation; while also surviving a quick trip to a pocket dimension. For all of your troubles you each recieve: