My party has a problem. We have what we call "stompy-stompers", which is only the name we give to chars with Stealth or Clanky-armor issues. Essentially, the chars that cannot get in a stealth operation or attack by surprise cause their stealth rolls and armor penalties that cause them to announce themselves to enemies save a Nat 20.

We were looking for a temporary solution that gives a bonus to Stealth influential enough for them to participate in Stealth missions for a little time. Something like an item we can activate to have a bonus to Stealth.

Invisibility would not work for it makes you undetected/hides you, but the noise would still give you away.

Would "Silence"-spell work? Would you give the person a bonus of Stealth with this or "Invisible"-spell?

Is there a way to get the "Untrained Improvisation" without having to use a feat slot?

Is there a cape, shroud, ring or any item that can be relevant?

Are these characters cursed to stay behind when we wanna do the stealth?