It's called the PEDRALI L002T/BA ARCHED FLOOR LAMP and you can purchase it here: http://www.nostraforma.com/en/pedrali-l002tba-arched-floor-lamp-p-16447.html

I don't recall seeing it but there are hundreds on Temple and Webster.

This isn't a personal recommendation as I have not yet purchased anything from this company, but I've been admiring the timber floating shelves on their website. https://shelvingshop.com.au/product-category/floating-shelves/wood-effect-finish/ Or you can buy the brackets and have the shelf custom made in whatever material and size you want. https://shelvingshop.com.au/product-category/brackets-2/floating-shelving-brackets/  I think hardware stores also sell brackets by themselves. I was thinking of going the custom route because that means I can ensure the brackets will be attached to the studs. I believe you can paint melamine after proper preparation of the surface, but I doubt if you can stain it.

It’s available at Dunelm UK, Joss and Main, Temple and Webster have a parquetry coffee table as do Interior secrets, coco republic, if all else fails a craftsman could make the nesting set for you.