Ideas for different blowgun poisons

So i was wanting to create a character that uses a blowgun as his main weapon, but i was looking for other ideas besides just poison damage.

Some other ideas i had thought of was an itching solution that makes the infected target break out in a distracting horrible itchy rash. Im thinking a con save for a minus penalty to attacks, saves, and concentration checks.

Or a tranquilizer that has a con save to put an enemy to sleep.

A hallucinogen, something that causes a random effect of either confusion, seeing things that are not there, or a watered down version of Tashas laughter spell.

A charm potion dip for needles to have a watered down charm effect.

I was wanting to flesh out these ideas with some hard stats, to give them RAW like properties. Any ideas or suggestions are welcome. Alternatively any links to similar or same ideas would be appreciated too.