Hi
@Moniqe19501 and welcome to NamePros!
Casino2407 - I think you were going for "24 hours a day, 7 days a week" here. If that's the case, then Casino247 would be the preferred name (and names with 247 in them do indeed make for decent domain names when paired with the right words). Unless there's another meaning behind 2407, I think you're looking at reg fee value here.
EventContractor - At first glance, this one isn't bad. There are few a few other similar names registered (unsure if they're developed), but no one seems to be branding with the term. While it brings up a lot of Google results, they point more toward job positngs and information. Ideally you would want to see lots of businesses describing themselves as event contractors in order to feel that you have a name of some value. I would list it in the low X,XXX range and leave it open to offers. See if there's any interest after a year and then re-evaluate.
CompassNavigators - This one is a big miss, in my opinion. CompassNavigator is a trademarked name belonging to an app:
"Compass Navigator 3D is a free 3D compass with a navigation "arrow" with which you can do navigation to any of the following targets:
- OpenStreetMap point of interests
- OpenStreetMap address search
- GPS addresses (suitable e.g. for geocaching, etc.)
- Compass directions (north, south, etc.)"
Since there really aren't any other logical uses for this name, you only have one good potential buyer. And you can't approach them for fear of legal action. I would seek to delete the name and get a refund if it's a recent registration. Otherwise, just sit it on a make offer page (with no ads... which means no parking service) and hope for the best. Do not renew.