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One can buy such toys almost at any store. The main thing is to believe the small toys. The toddlers may eat them. Buy loose parts for toddlers https://www.tickit.eu/collections/loose-parts-play right at this store. They've got the most comprehensive choice among all the other shops I've ever met. And I bought similar toys for my kid at many places. We've got many toys that develop logic and hand fine motor skills.