The pockets I sized for an address notebook (this one from
Operation Paper Cut), some cards (currently full of Black Apple and
Simple Sparrow loveliness), and stamps (note to self: get some
prettier stamps).
On modern routers, it's usually
pretty easy to set up Quality of Service rules (so that certain devices and / or applications on your network get bandwidth preference to ensure smooth
operation), set up «bedtime» enforcement where certain devices can't access the internet during homework or bedtime hours, enable guest networks for visitors, or even attach USB hard drives for dead -
simple Network Attached Storage to store file backups, family photos, or other personal files.