Characters that don't occur on the keyboard need to be copy-n-pasted. Characters I use frequently:

description copy/paste HTML entity URL encoding
em dash —
←
⇐
→
⇒
dagger †
double dagger ‡
right paren ) %29
transgender symbol ⚧


Bullets

U+2022 BULLET
U+2023 TRIANGULAR BULLET
U+25E6 WHITE BULLET