The Wasteland explorer theme features a motorcycle in an upstairs room and some wood benches and chairs. The motorcycle will explode when shot and remain on fire for some time. After you buy this theme from Moira Brown, your Megaton house will also contain:
Much like the Vault theme, the lighting of the house will change when this theme is applied. However, instead of blue lighting, the light becomes almost orange in color, causing a 'color washout' effect on many items and surfaces.
After the first time you visit your house the tint will go away.
If you have this in your Megaton house, Dogmeat will spawn on the table when you enter. This is a harmless but amusing glitch.
If the motorbike in the Megaton house explodes through any means, it will sometimes trap Wadsworth behind the wreckage if he is in the room. There is no way to put out the flames and they will remain indefinitely. (pc If you select the bike's flaming chassis in the console, and type disable, it will remove the bike and flames)