DIY Hanging Lamps

I have a little problem (don't I always?): we need to hang a lamp over our dining room table, but the ceiling is impervious to screws and nails, and most lamps are too heavy for an adhesive hook. But I've come across two beautiful DIY lamps recently that look light enough to work. If I end up making one of them I'll definietly show you the results.

via Design Sponge, and Ruffled.