[KennyC]

If you have latex paint...there are a few options....the best is to see if you can use it or maybe a neighbor...
Even if it is finish paint, it could be used for a "primer coat".

Otherwise, if the can is more than 1/4 full, kitty litter, sand, or sawdust will absorb it...then put in trash....it is not toxic.
Under 1/4 of a can, leave it open to dry out, and throw in trash, still open...

The only threat from "latex" paint is the potential "mess" with disposing it...but it is non-toxic.

OIL based (alkyd) is different and MUST be disposed of properly, according to local/state ordinance.