You can turn one into a server. I used to keep one as a sort of backup internet connection, since there are "unlimited 4 hours of internet" prepaid plans, like

You can turn one into a server. I used to keep one as a sort of backup internet connection, since there are "unlimited 4 hours of internet" prepaid plans, like $1, here that work pretty well when used as an access point if your home internet's down for whatever reason. Nowadays I just sell them