public Placeable getRandomPlacable() {
        Placeable p = null;
        Object[] ks = placeables.keySet().toArray();
        if (ks.length > 0) {
            String s = ks[Rand.getRange(0, ks.length - 1)].toString();
            p = placeables.get(s);
        }
        return p;
    }