Guerrilla
guer·ril·la /ɡəˈrilə/
organized in an informal way and without official permission or approval.
- guerrilla marketing (= marketing that uses unusual methods in order to achieve the greatest effect for the smallest amount of money) using
unusual methods to create or get attention for your ideas, art, products.
- “He films on the streets, with a tiny budget – this is guerrilla filmmaking”.
Activity
ac·tiv·i·ty /akˈtivədē/
the condition in which things are happening or being done.
- “there has been a sustained level of activity in the economy”
a thing that a person or group does or has done.
- “the firm’s marketing activities”