For collectibles, I have the following bind. Even grabbing them when they aren't out of reach can be a PITA with targeting, etc. You're staring right at them, but you can't pick them up. It is so much easier to just hit 'g'. You still have to be near it, of course.
/custombind add grabglobe
/custombind set grabglobe /invoke ${Ground[${Glowing Globe}].Grab}
/bind grabglobe g
You could probably use something similar (you just need the /invoke part) for non-collectibles, etc.