Random Stuff:
nFJLQqfrASAMyw3Sn2mCU9qjt17ESBI7

Easy to read:
8XT2HXYKMH481H21CTWMY4CT81HMTTUX

Passwords:
)ACPi*XP?]kaS[IP]p}Mpi=8o,mV]r=`

URL-safe:
K6JDEx75.PR3.vdg~qzT1eKZzWQWvXRw

Lower-case:
pmslmjutnnmfdaaxhrzhvbpcfkwrfqej