To create a wallpaper with Euston Station as the main feature, we can use the @mapbox/vector-tile library to parse vector tiles and display them on a map. We'll also need to add some product and vector elements to enhance the design.

Here's a brief snippet in JavaScript using Expo:

import React from 'react';
import { View, Text } from 'react-native';
import { MapView } from '@expo/mapbox-mapbox-gl';
import { VectorTile } from '@mapbox/vector-tile';

const eustonStationVectorTile = new VectorTile('https://a.tile.openstreetmap.org/{z}/{x}/{y}.png');

const App = () => {
  return (
    <MapView
      style={{ flex: 1 }}
      zoomEnabled={true}
      rotateEnabled={true}
      minZoomLevel={4}
      maxZoomLevel={15}
      centerCoordinate={[0, 51.5074]}
      zoom={10}>
      {eustonStationVectorTile.getFeatures().map((feature) => (
        <MapView.Marker
          key={feature.id}
          coordinate={feature.geometry.coordinates}
          title={feature.properties.name}
          description={feature.properties.description}>
          <View style={{ position: 'absolute', top: 0, left: 0, width: 50, height: 50, backgroundColor: 'red' }} />
        </MapView.Marker>
      ))}
    </MapView>
  );
};

export default App;

This code uses the @mapbox/vector-tile library to parse a vector tile containing Euston Station's geometry. It then displays the station as a marker on the map, along with some additional product elements (in this case, red squares). You can customize the design and layout to fit your needs.

Note that you'll need to replace the https://a.tile.openstreetmap.org/{z}/{x}/{y}.png URL with the actual vector tile URL for Euston Station.