We don't think we've been this excited since April 1974.

ABBA: The Museum is opening in Sweden.

And in between booking our flights to Stockholm, rewatching ABBA: The Movie and voting for our favourite ABBA song, we've been pondering: what artefacts will the ABBA museum hold? Or rather: what should it hold?

So we've drawn up the list below (no need to thank us, ABBA museum curators!). If we've missed off anything essential, do let us know in the comments...

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  • The helicopter from the 'Arrival' album cover

    Obviously, this HAS to be an interactive exhibit.

  • Björn's platform boots from the cover of the 'Greatest Hits' album

    No wonder Agnetha is looking so forlorn. HER MAN HAS BETTER BOOTS THAN HER.

  • Agnetha's blue eyeshadow from 'The Winner Takes It All' video

    And her necklace, while we're at it.

  • Anni-Frid's fur coat from the 'Knowing Me, Knowing You' video

    Potential hazard: museum visitors may try to steal it if it's particularly cold outside.

  • A poncho, preferably crocheted

    An ABBA staple.

  • Benny's beard

    As you can see, it's still in good nick.

  • Björn's hair

    As epic, in its own way, as Benny's beard.

  • The silver foil from this poster

    As with the helicopter, this has to be an interactive exhibit.

  • The piano Benny composed the 'Dancing Queen' riff on

    With big, satin sleeves you can put your arms through in order to play it yourself.

  • Agnetha's crocheted blue hat from their 'Waterloo' outfits

    As seen in <a href="http://www.youtube.com/watch?v=Sj_9CiNkkn4">the official video</a> and also left, when ABBA won the Eurovision Song Contest (a turn of events that Agnetha was clearly delighted by).

  • The white outfits from the 'Mamma Mia' video

    Including Benny's calf-grazing dungarees.

  • Agnetha's pain

    Look at her (again). If Agnetha's poor, ripped-out metaphorical heart isn't on display in the museum, we'll be VERY disappointed.