@nemo I somewhat blindly voted #Proxychains despite abandoning it years ago. The recent #Torsocks version breaks Postfix and never worked on Java apps. So I should probably retry proxychains. When I tried proxychains many years ago it worked on nothing. But I should try it again.

My top choice is actually to use #Firejail with the --net option pointing to a Tor middlebox (which is not a separate box but just a config that yields a virtual eth0 replacement device).

To use privacy networks to perform (or complete) a download…

I2P network:
Add an 'environment variable' called 'http_proxy' to tell wget how to connect to #I2P like so:
http_proxy=127.0.0.1:4444 wget -c http://domain.i2p/file

Tor network:
Ensure the '#tor' and '#torsocks' packages are installed then prepend torsocks to #wget, eg.:
torsocks wget -c <URL>

@torproject, because I was unable to attend it, I was hoping to download the live stream by running youtube-dl through #torsocks to watch it later, but it is unfortunate that as of recently this privacy-preserving tool combination gets you this:

ERROR: Unable to download webpage: HTTP Error 429: Too Many Requests