Yo Dawg, I've heard You like chests, so I've put a chest inside your chest so you can protect stuff while protecting stuff. But seriously, I just tested it and it seems that storing box in box can help protecting agains wand of fireballs or mines, but not from kicking and throwing.
In real game I once wasted 3 SoCM to turn keys into phoenix feather, just to mark them as my keys and make them less burdening. I also often change decos shirt to Valpurium when I get another one from Bone file. Just my wierd way of wasting SoCM when I clone too much. It also helps a little in INT training.
Myself, I always kick fat-ass in town for Levitation Belt end enter thirt level from the wrong end, Jenny is forced to be moved into a random room, leaving both exits from UT3 accesible.
IMHO Dex and Agi rise is just for mesuring how much out hero have streched his limbs. Note that sleeping on the soft sofa or comfy bed prevents DexAgi from dropping, but sleeping on the hard ground in real life causes spine pains and overall body stiffness, so does it affects stats in game. Also, altered limb's Dex/Agi is directly derived from material flexibility, in other words how much they can bend before breaking.
Capri, You can get as much Neerc Se'ulbs as you want, just champion pray Mort again (he might give you Angel, cheap bastard, so keep trying). 55 int should be enough to change stuff into GEF/Valpurium, but after you get 50 int/wis go back to the Cathedral and talk to Dolpins. It will boost your mental stats to 100 each or more if you are persistant. That makes you smarter than Ischaldirth, so you can dedect any mage with ESP before he does and squash him like a coward rat he is. Also - drop this armor of yours or change it into GEF ASAP - it will shave only 5 AV from it but it will weight 1000g or so.
And flesh objects as well. His screams also does trigger mines to explode, but only those active. If someone have much Agi he should be able to teleport near Enner, deploy a mine, drop some backpacks, wands or whatever and GET THE HECK OUT in between Beast screams