[spacelamb]

Probably objects that make you imagine about what day-to-day living was like in the past.

If VR becomes widespread, perhaps the first VR headset. Or perhaps niche, quaint items with great craftsmanship (no longer used at all in the future), like a high-quality metal mechanical pencil, fountain pen, or ballpoint pen.

Early commercial spacecraft (SpaceX) would also be a certainty, as the expansion of humanity across space is near-guaranteed (as long as humanity doesn't destroy itself). Perhaps also today's fashion (thinking of fashion museums).