Idea for a new hobby:
Collecting network packet capture (pcap) traces from interesting/"fun" network environments. :3
In the same way other people collect stamps or whatever.
"Look at this weird setup with multiple DHCP servers!"
"I've got one where the timings are totally off!"
... you could also trade them if you're comfortable. :D
If you've never made a packet capture trace before, here's how you can get started using Wireshark: https://www.howtogeek.com/104278/how-to-use-wireshark-to-capture-filter-and-inspect-packets/
If you prefer video instructions: https://www.youtube.com/watch?v=Ov3BRzGziCw
Addition to the packet capturing thing earlier:
Please be aware that captured packets can contain sensitive information, like what sites you're browsing, their content or even passwords. So please only capture your own traffic or other people's traffic only with their explicit consent, and be careful if you choose to share any of it.
@NerdResa That is exactly what I worry about for https://www.cloudshark.org/ (I've never uploaded there).
To get started with sample captures, there's https://wiki.wireshark.org/SampleCaptures (I have used these samples) and http://www.netresec.com/?page=PcapFiles (I have never used this site).