There should be a shortcut to absorb embers from the lighter in inventory

[Wuntunzee]

At the moment on console, the only shortcuts available on the lighter are Up to identify, Right to equip and Down to drop. It's a lot to equip your lighter then drag your cursor over to your equip slot and press Left on the dpad to absorb souls.

When your cursor's over the lighter, you should be able to press Left on the dpad to equip and start absorbing embers straight away. 

Cheers.

[Wuntunzee]

The same with Wolfgang's dumbells, left on the dpad to start pumping without having to equip, scroll to the item, then start pumping.