You can take the original Xiaomi cubes (purchased on Aliexpress or Banggood for around $20) and modify them to look and sound more like a regular Rubik's cube. The whole process takes about an hour and requires precisity and patience.
You should fully re-sticker each cube so they look more regular (the original Xiaomi colors are quite unusual). You can buy suitable stickers online (unfortunately Olivér's stickers have temporarily shut down due to Covid, so you can't buy the Benke Smith stickers at the moment).
If you buy more cubes (I recommend buying at least 2 cubes so you can perform the cloning routine), you can also select different sticker sets for your cubes.
The Xiaomi cube (and Giiker cubes as well) has a clicking sound as you turn the sides, because the magnets inside are loose (they can move around a bit and hit the plastic, hence the weird sound). Spectators might find it unusual and they can suspect that the cube is a special one (and they are damn right). By fixing the magnets in the edge pieces using superglue we can eliminate this sound, making the cube sound like a regular one.
