I tried a dripper once and it did very little for me and I stopped using it.

I usually mist the tanks that need a boost.

Something that I do that really helps give me perfect sheds is place moss in the hides. I keep the moss moist during a shed and allow it to dry out when not in shed before making it moist again. This creates higher humidity directly where the snake spends most of its time and therefore benefits the snake directly.

I just use moss from the pet store. It last a long time and can be cleaned a few times before needing replacing.