"Equipping" item to character (+auto rig pro)

I’d like to “equip” (I don’t know the actual term if there’s one) an object to my character.
The latter is rigged with auto-rig pro, the object, on the other hand, is rigged with a custom skeleton.
How would I join the two?

Can you post a picture of the item?
why is rigged ,where did it come from ?

Is it something the character will simply carry( weapon, tools etc)
or are you trying to have him “wear” the item ( clothing, back pack) etc?

it’s a scepter of sorts. I rigged it because I thought it was correct?

Edit: maybe I should position the mesh near the hand and then add the object’s bones directly into the arp skeleton. The same thing I’ve done for the hat.

A “sceptor” is typically a static prop
that a character would carry in his hand.
unless you need it to articulate or somehow change its shape,
you do not really to “rig” it and can simply parent it to the character’s hand bone.

it has some moving parts, also I’m planning to animate another prop to make it look elastic/cartoony.