Warden drops (please)

At the moment, the warden drop nothing. I think this is a problem, because it's designed well, but very difficult to kill. There is no incentive to kill it, so what's the point? As it is now, the warden is just another boss that isn't worth beating. The chests in the deep dark are pretty good, but there doesn't seem to be anything boss worthy. The ender dragon has the dragon egg (which acts as a souvenir, or trophy of killing the dragon), the wither has the nether star which can be used to craft really useful beacons, and the elder guardian... well, it's kind of the same story as the warden. No point in fighting it. Apart from making sponge gathering a little easier. It would be cool if the Elder guardian, dropped an eye, or whatever it uses in the lore to give off the mining fatigue effect. Like a block that functions like a elder guardian, that you can just place. This is about the warden though, so time to get back on track. This is just a random idea, but a possible drop could be a stack (more or less) of some sort of block that mutes or dampens sounds. This is just something I thought of, but it doesn't have to be that. Just please make the warden drop something useful. (Bonus points if you also add something for the elder guardian)

If you have read this far, I just wanna say thanks. glad to see that you(hopefully)care about the community. Though there are many things that I would personally want to change, thank you for creating this amazing block game.

- Herbert :)