Modern use for angles

Is there any modern use for angles and leepers? I cant seem to find a good way to use them other than to hand place sawed off angles. Also if I were to make a sawed off angle, how much pin should I cut off? 

Thanks!

Just counted today and I have thirty four 1/2” babys. Never cut them off!  

Winter climbing; cams don’t work when the crack is icy. Most relevant modern use for angles.

Wind chimes. They make a beautifully melodic sound.  

Sawed offs are super useful, especially hand placed in old angle scars. I'd say cut off half.

I typically cut off 1/3.  What your looking for is to reduce the length of the piton, while keeping just a tiny bit of taper in case you need to tap it

Rap anchors in the alpine.  Drilled angles in crappy desert sandstone.  That’s where I keep leaving them.

The Canadian Rockies. Not so much leepers, though.