Wishlists for presents and wishlists for the viva are two very different things.
For presents you’re telling others, “If you can, if you want to, can you please get me this?”
For the viva you’re saying, not asking, “These are the things I really want when I meet my examiners.”
Really, the best person to help you get what you want from your viva wishlist is you. If there’s things you want or feel you need then you have to work to make them a reality. If there’s no way of making it certain then you have to act to get more comfortable with the uncertainty present in the situation.
You might also have to recognise when an item on your viva wishlist, like a present wishlist, is just not going to happen. Some wishlist items are a shot-in-the-dark, maybe-just-maybe…
…but they’re probably more of a distraction than anything. Work to remove these items from your viva wishlist. Focus on what you can achieve, not just what you wish for.