Henriette over at kawaiicph brought olioboard to my  attention. A fine moodboard creator, where you can satisfy your fantasy about complete home make over or make under, or both. Just choose wallpapers, rooms, accessories, lightning - whatever holds your fancy and combine them to your ideal room. One can upload own photos, too.
Obviously this is something designed to sell overpriced furniture and stuff, but who cares? Dreaming is always allowed.
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