What are the items Pikachu/Eevee give you used for?

Question

When playing with Pikachu/Eevee, they will sometimes give you a gift with an item in it. Some of them that I have received contain Stardust/Heart Scales, but I have also gotten some new items that I have no idea what to do with, such as the Stretchy Spring/Marble. Do these items serve any purpose at all?

Comments

Aren't there descriptions for every item?

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Yeah, but they just describe what they are and not what they can be used for.

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Oh, Okay. Looks like you are just gonna have to wait for the information to be discovered.

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Idem #132; I suppose we still have to wait until some mastermind and/or hacker figured out how to use them.
Until then, I won't be the monster who sells the precious items my partner gave to me, no sir!

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The games have been hacked extensively at this point -- virtually everything was known even before they formally released. Any purpose would have been common knowledge by now.

Answer 1

The only use found by people so far is selling them for a small amount of money. Don't believe it has any other use other than its cute your Pokemon have it to you.