Any good addons to add?

Send my your best addon so i can fuck around with it on single player :D

M9K is a good set of weapon addons to mess around with in singleplayer. you can just line up test subjects and kill them. there is something called a davy crockett in one of the addons and it acts as a mini nuke. its ace

Gib mod is very fun, there's a cool map it comes with too.
http://steamcommunity.com/sharedfiles/fi...xt=gib+mod

TDM cars are a fun one, wiremod, advanced dupe, pac3, and some others. I mean there is a lot just got to do some looking and see some fun things.

Try VCMod it is really fun and it lets multiple people sit in a vehicle.

Wiremod and spacebuild. I've spent a lot more time than I'm willing to admit just fucking around with wiremod and making ships.

SNPcs are fun to mess around with, or the VJ base if your into scaring yourself or having (somewhat) more intellectual ai.

Add SNPC's, some weapons like lightsaber or portal gun, and good map :D

TDM wiremod, advanced dupe, pac3 and alot of more

You can choose any addons for your server in workshop