Rendering an object 'muktzeh machmat chisaron kis'

Hi,

We have learned that items which are particularly fragile and/or valuable, such that people don't normally handle them, are "muktzeh machmat chisaron kis" and one may not handle them on Shabbat.

Designating a space for the safekeeping of an item is a way to define an item as "muktzeh machmat chisaron kis", but this depends upon intent. We designate spaces for many items for the sake of their utility or for keeping a room clean, and this does not render those items "muktzeh machmat chisaron kis".

(Rav Moshe Feinstein, Igrot Moshe Orach Chaim 5:22:12)

Have a great day,
Mordechai