I posted some
detailed instructions a couple of years ago. Here they are again:
Using Shadowkeeper, all you have to do is open a saved game, select your character, and add a couple of effects under the "Affects" tab. There are a bunch of variables involved, so you have to pay attention to the details. The easiest way to add an effect is to copy and paste it from another character who already has that ability. I create "dummy characters" just for that purpose. But if you want to do it the fast way, try this:
Select one of your existing effects, then press "Duplicate". Now you need to edit the new effect you just created, so press "Edit". A panel with a bunch of boxes will pop up.
In the box that says "Type", enter 0x00000139.
In the box that says "Param1", enter 0.
In the box that says "Param2", enter 0.
In the box that says "Flags", enter 0x00000009.
In the box that says "Time", enter 0.
In the box that says "Probability", enter 100.
In the box that says "Target", enter 0x00000000.
In the box that says "Resource 0", enter SPCL915.
The boxes that say "Resource 1", "Resource 2", and "Resource 3" should be blank.
Hit "OK" to close the panel.
Now you need to add one more effect. Duplicate one of your existing effects and edit it as follows:
In the box that says "Type", enter 0x0000012E.
In the box that says "Param1", enter 0.
In the box that says "Param2", enter 1.
In the box that says "Flags", enter 0x00000009.
In the box that says "Time", enter 6.
In the box that says "Probability", enter 100.
In the box that says "Target", enter 0x00000001.
In the box that says "Resource 3", enter SPCL915.
The boxes that say "Resource 0", "Resource 1", and "Resource 2" should be blank.
Hit "OK" to close the panel and save your work.
When you restart the game, you character will have the Use Any Item ability. Have fun!