yes
No you don't need a permit
do I need a permit to sell things in Wisconsin off the street
no
No
No it is not necessary to have a business permit or license to sell merchandise at any kind of convention.
do we need a permit to sell snowcones for one day..
Hell no
In order to sell plants as a business, you will need to first get a business permit. From there, you will need to get a business license.
no you don't
there is slime
Yes.
You need a Possession Permit. Ask your local Game Warden how to apply for one. If you want to sell them, you need a Game Farm Permit.