Add a small image to the statusbar
UIWindow *myWindow = [[UIWindow alloc] initWithFrame:[UIApplication sharedApplication].statusBarFrame];
[myWindow setBackgroundColor:[UIColor clearColor]];
[myWindow setWindowLevel:UIWindowLevelStatusBar];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(280.0f, 5.0f, 10.0f, 10.0f)];
[imageView setImage:[UIImage imageNamed:@"status.png"]];
[myWindow addSubview:imageView];
[imageView release];
[myWindow makeKeyAndVisible];