Why would a plain blanket be better at blocking acid/shock inventory damage than, say, a set of clothes you have sitting somewhere in your backpack? Or a robe? Or a cloak? Or rather - why would any of those items block the damage? You're being showered in acid, either from a bolt/breath attack or from a trap, how would one item not specifically designed to counter that type of elemental attack block it? It's acid, it's supposed to be pretty darn good at destroying things. And why the plain blanket and not that black robe you picked up in VD:1?
I shouldn't be doing what I'm about to do, since it's very counterproductive in this section of the forum, but I don't think you're doing any better.
You asked me in another part of your posting spree why am I being hostile, so let me answer. What you are doing is posting mostly useless (apart from one or two partial exceptions) suggestions that were clearly born not from extensive play and experience, but a mild inconvenience you run into in the game, which for some reason you chose to tackle by not giving it more thought but by coming up with how much easier it would be if there was a shortcut bypassing this particular feature. So there's no acid or shockproof blankets. Might it be a design choice? How would adding them influence the general game balance? Wouldn't it make certain locations a walk in the park and free source of massive xp and loot? Maybe someone already suggested this? Maybe there are reasons to not have in the game that's over 20 years old and is AFAIK as a rather kitchen sink-like within the genre? No, instead of thinking about it, you made a quick run through your backpack, chose an item that you don't have any particular use of and decided it would be a good countermeasure against a problem you've run into.
I'm not going to discuss how lazy and harmful your way of solving problem is in relation to ADOM's game mechanics any further. What I do have to point out is that you're giving into your ADHD or whatever you're suffering from and litter the front page of the bug section with your mostly useless suggestions, hiding actually important problems, when we're on most likely the last release before the first official Steam version. Actual problems like game crashes or huge display bugs are out on the second or third page of the issues list partially because you didn't bother to read the manual or didn't bother to try things out and see the results etc.
Please stop posting until you actually have worthwhile ideas to share or find a real bug.
To the other forum users: I'm sorry for the outburst, I'll try my hardest to contain myself from now on.