Using U2415b with two laptops (alternating, one at a time)

A look through the forums suggest that this questions hasn't been hashed before. If it has, please point me to it and accept my apologies.

I alternate my Dell U2415b monitor between two different laptops. Right now I simply unplug the HDMI cable from the first laptop and plug it into the second. This is

1. inconvenient and
2. might ruin the HDMI female plug(s) on both laptops over time.

I'm looking for a way to use the monitor with both computers (one at a time, not simultaneously!) with minimal plugging/unplugging. 

I prefer HDMI, but one of the laptops is a Macbook Pro, so Displayport might be usable too.

I realize I could get an HDMI switch, but that adds clutter to my desk. It's what I plan to do if it turns out to be the best option. But the monitor has so many input ports. Surely there's a way to leverage its built-in capabilities? 

All input gratefully accepted.