In Australia, an extension lead with several power points is usually called a powerboard. They are easy to overlook until a room runs out of power points. A few minutes choosing one is better than daisy-chaining several cheap ones.
A smart plug is a different tool: it adds a schedule or app control to a single appliance, such as a lamp. It is not a way to add power points.
What to check on a powerboard
The details on the product page tell you most of what you need.
- Number of power points and the length of the cord
- The maximum load stated on the unit, compared with what you plan to plug in
- An Australian approval mark such as RCM, and the plug and rating shown on the label
- Do not plug one powerboard into another
Where a smart plug fits
A smart plug suits low-power devices where timing helps. Check that the app works with the voice assistant you already use.