Antique Victorian late 19th century oak glove box upcycled to artist box  
This lovely very well made box was originally for gloves ( originally may have had a lining) now could be used as an artists paint brush box see pictures 16 used brushes all included!! Some minor age related wear 
36 cm wide 
12 cm depth 
7 cm tall 
Artist paint boxes have evolved from early containers like animal bladders to modern portable sets, with key innovations including the development of pre-packaged watercolour cakes in the late 1700s and the invention of collapsible metal paint tubes in the 1840s. These developments made paints more portable, allowing for the rise of outdoor painting or plein air and changing the way artists worked. 
Early paint boxes
Artists historically stored pigments in containers like animal bladders, which held the paints but were cumbersome.
Around 1780, brothers Thomas and William Reeves began commercially producing pre-prepared cakes of watercolour, which were more convenient than grinding pigments from scratch. These were sold in boxes and were popular for a long time. 
The advent of portable oil paint
The most significant change came in 1841 when American oil painter John Goffe Rand patented a collapsible metal tube for oil paint, which was an improvement on the syringe-like tubes used previously, says Winsor & Newton.
English manufacturer Winsor & Newton later patented a crucial improvement: the screw cap, making the tubes even more practical and allowing paint to be stored for longer.
This innovation made oil paints portable, enabling artists to easily take their materials outdoors to paint en plein air (outdoors) and capture spontaneous moments from nature, notes Gwartzman's Art Supplies. 
Modern evolution
Portable paint boxes continued to be developed by companies like Winsor & Newton, which created everything from large, water-bottle-style sets with mixing palettes to miniature, pocket-sized tins of watercolour cakes, says this Winsor & Newton article.
These developments show a consistent effort to refine how artists work, from the portability of the paint itself to the tools used for creative inspiration.