Update on the plan for QtWS from discussions on IRC in #kde-promo / Telegram group:

KDE could provide a power station at the booth, so people can charge their phones (we provide something practical and immediately useful). This keeps them longer at our booth and gives us time to talk to them about what we do.

The general theme for wall posters and other visuals could be "KDE (Em)Powers You".

Example Konqi made by @jensreuterberg

More info/plans from chat logs:

For the charging stations - sidenote just for posterity: we should have posters "why you should use KDE" near the chargers on the wall. No one's gonna leave their phone behind and walk away and will look at the walls and even read stuff if they want to.

We need:

1. 1 poster that "KDE has chargers" (which are sort of coming in place - using the Konqi above, some stern blue flat surface and text with lighthing (because heavy metal). We need 1 poster within the booth talking about "recharging with KDE" or "KDE powers you"
2. We need promo stuff (poster) talking about the live hacking in the booth as well. OR someone walking around with a massive sign handing out candy talking about Davids live hack
3. We need "about KDE promo stuff" within the booth