I would like to create a wondrous item that will consume a charge to heal 1d4 hit points, at a range of 30 feet, as a bonus action.  I cannot seem to figure out how to accomplish this.  Has anyone done this that would be willing to share their results with me?

You would have to just give it a charge and list the rest as plain text. So far actions (including bonus actions) cannot be added to magic items.

Or just allow adding spellcasting mod (+0 for non-spellcasters) by simply having it cast Healing Word. Then it can use charges and be easier to access and use.

Quote from Cyb3rM1nd >>

Or just allow adding spellcasting mod (+0 for non-spellcasters) by simply having it cast Healing Word. Then it can use charges and be easier to access and use.

I started to do that, but it was supposed to be just a little boost with limited range.  Healing Word's range is double what I wanted, and I just wanted the target to get a tiny handful of hit points.  It was literally just something to "stand up" a fallen comrade.  Thank you for the suggestion. :)

Quote from Mordaris >>

Quote from Cyb3rM1nd >>

Or just allow adding spellcasting mod (+0 for non-spellcasters) by simply having it cast Healing Word. Then it can use charges and be easier to access and use.

I started to do that, but it was supposed to be just a little boost with limited range.  Healing Word's range is double what I wanted, and I just wanted the target to get a tiny handful of hit points.  It was literally just something to "stand up" a fallen comrade.  Thank you for the suggestion. :)

 
You could create a custom spell just for this magic item.