I like the two command line tools that use curl
<command> | curl -F 'sprunge=<-' //sprunge.us
<command> 2>&1 | curl -F 'f:1=<-' ix.io
You can make a simple function to save you having to remember the gory details, like so:
sprung() { curl -F "sprunge=<-" //sprunge.us <"$1" ;}
