I attended two events recently where there was no branding of the organization on the stage at all. The organizer at one of them mentioned that they missed not having some form of signage, and simply didn't think about it. This person had another role within the organization, so managing events was not priority on the to-do list. But it was noticed after the photographer continued to snap photos of guests on the stage, and there was a blank scene behind them.
Perhaps I take this for granted, but it seems so natural to have some form of your brand represented on the stage. For individuals charged with managing events, but have another 'day job', here are some cost-effective ways to easily place your brand where others can see it:
Podium sign. This is easy enough to create and so often not used. It often can serve as the main item on the stage if on a budget. Make sure to get the dimensions of the podium in advance.
Banner pull-ups. Perhaps a couple of these can flank the stage or be placed near the podium depending on the program.
Foamcore boards. Often 24 x 36 or other sizes might work that feature your event design and branding.
Banner. While I am personally not a fan of large banners hanging on a drape, they could potentially work for your event.
Screen. Depending on your program, you might consider using a screen that projects images of your event's brand such as your logo.
While many of these suggestions are basic, they can go a long way toward extending the life of your brand well after the event has ended.