Chances are most of your alumni, including the ones you have always wanted to come to campus to speak but who have always been too busy, are sitting at home right now. They, like the rest of us, are unable to attend events, meetings or travel to different locations but they are online. Contact them. Organise an ongoing alumni speaking series online, open to either just students or to the wider community, inviting different alumni to speak about topics of interest. These should be organised as informal chats rather than more formal podium type presentations. No PowerPoints allowed, just good old sharing.