Ice skating is popular with locals and travelers in the Moscow region. If you want more outdoor adventures, try some hiking as well.
Likova and Pykhtino are definitely worth checking out during your time here. Head 1 mile from Vnukovo and you'll be in Likova. Alternatively, Pykhtino sits 2 miles away.
If you're attending a work conference in Vnukovo, you might want to follow up with your new friends over a couple of drinks. Fortunately, these convention centers have some great restaurants and cafés nearby: