OK, I am thinking of what's in my attic right now. Old fashioned toys, like the wooden ones, the baby doll, the bear, the set of marbles. Definitely some of the old-fashioned Christmas ornaments and maybe the plastic fir (we keep our artificial tree in the attic). How about a diary and a few photo albums or scrapbooks? One of those old fashioned sleds that we got from the Advent calendar (ala Rosebud). Sophies rocking chair, the hat stand and the dark spooky candle. And some of the Neovian furniture and clothes would be perfect, like the old fashioned photo of Aunt Alice and the gas lamp. The Bagetelle stuff might fit in too, like the Bagatelle treasure chest and purse. And don't forget the sheet-covered furniture. And as someone said earlier, the dusty old tambourine and sandwich, complete with their own cobwebs. Maybe some old newspapers, like the Haunted Woods Reader. And some of the fishing stuff would work like the waterlogged book and broken sailboat. Souvenirs from past vacations, like the tacky stuff you see in the Tiki Taki shop--the Shell acara totem, hularoo, the island lighter, the souvenir magnet--and maybe a sea shell or two, the roo island photo frame. Old fashioned and broken jewelry that was handed down through the generations, like the broken heart pendant, silver heart charm bracelet. Old sports awards and trophies, like the sledding trophy, blue ribbon, golden medallion. And I keep old greeting cards, so maybe some that are rather special, like the one that says Youre the best or the Chia holiday greeting card.
Oh my gosh, look at that list I've made above. Hehehe. I've sure got a lot of junk in my attic.
You might want to check out Neoitems. And go page by page through the active list. It is time consuming (I've done it a few times when searching for my plushies) but you might find things that strike your fancy.
And, hey, the idea for your gallery is so cool. I am crossing my fingers that you get gallery spotlight.