I am looking for a word to describe the products or solutions to problems that are made at a very low cost, often home-made or by a very small organization. The products or solutions perform their function very well, but lack the aesthetics found in major brands or finished products at retail stores designed just for that purpose.
hand bags that are reasonably strong and functional, only a lot less attractive compared to expensive ones
a home-made camera mount built by a few pieces of wood, glues and
blocking sunlight from the window with aluminum sheets
EDIT: There have been a few suggestions with "hack" and "improvise". However I do not wish to convey the meaning that the solution is temporary or rushed under time pressure. The key point is low cost and sacrificing elegance, decorations which are unnecessary to make it functional. The goal is cost-effective. I think "utilitarian" comes pretty close.
1.1 US informal as modifier
Made at home, rather than in a shop or factory. ‘a home-brew radio transmitter’
Quoting wikipedia for the ham radio usage ...
Homebrew is an amateur radio slang term for home-built, noncommercial radio equipment. Design and construction of equipment from first principles is valued by amateur radio hobbyists, known as "hams", for educational value, and to allow experimentation and development of techniques or levels of performance not readily available as commercial products. Some items can be home-brewed at similar or lower cost than purchased equivalents.
"Streamlined" Often a prototype will be a no frills version of the intended finish product. Off-brands are sometimes made by the same manufacturer as the product that carries all of the frill features and marketing costs.