Cheers ! We love it !
From Tesla we got;
The 'rubber' mats (although you can get cheaper versions); in the Frunk, Boot, lower boot,
The boot side pocket thingys with the carpet lids,
The accessory tray for the centre console and thats about it.
Not sure if you're asking about the registration number or the actual plates. The actual number plates were from Sure Plates, £23. The Reg number was bought from DVLA for £160 (plus the £80 transfer fee). If you search back on my posts you'll see how to attach them without the ugly black tesla frame/ plate holder. Basically they are just attached to the body with double sided pads, which you get from Sure Plates when you order them. Other option is to get stick on ones. Arguably they look better but they aren't as durable and I'm not sure if the front one would get a hammering with our weather and decide to eventually peel itself off.