VirtualPing is a simple, configuration-free add-on that places Minimap pings on the actual 3D plane, using AVR (by Olog). AVR fascinates me, and this was a simple experiment after messing with AVR for a bit. There are much greater things to come from AVR though.
Just to be clear: this mod requires AVR. (latest versions from WoWAce.com)
VirtualPing not only shows a graphic on the ground of where you/someone else pinged, but draws a line from you to the pinged location. VirtualPing's only quirk is the Z coordinate is always the player's Z coordinate (not a limitation of AVR but rather the Minimap gives no Z coordinate). In other words, if a Minimap ping is clearly above or below the Z coordinate of your character (e.g. pinging some mountains), the 3D ping will still show at the player's Z coordinate.
As of v1.0.2, VirtualPing also allows you to ping your cursor location (credits to Olog). Simply create a macro with the following and bind it to a key:
Alternatively, you can use the function
VirtualPing:PingCursor().
If you like this mod you may also like
AVRE (by Allara), an AVR mod for raiding.
(some credits to TomTomPing, used its Minimap coordinates scaling code)