Leave your creatures prospecting.
While you are away, nothing accrues against you: no penalty, no backlog, no account to settle.
Your creatures, though, prospect. A lead names what passes and nothing more: no experience, no item, no creature.
Pick a lead up when you get back.
Ignoring it costs nothing, and it goes cold when the region drifts. So the return has something in it, and the absence changed nothing.