Project Type: Fixed Price Budget: Looking for a practical, affordable fixed-price proposal for concept design plus one simple working prototype. Project Overview: I am looking for a product designer / industrial designer / prototype builder to help me design and create a working non-electronic prototype of a portable cash organizer. This is not an electronic product. I do not want: screens lights apps batteries motors sensors I want a mechanical, portable, organized cash system that helps store, separate, access, and reload bills and coins by denomination in a clean and practical way. The main goal is to create a compact portable organizer that feels premium, is easy to use, and has a simple but functional working prototype. Core Concept: This product should be a portable clamshell-style or similarly compact organizer that includes: separate bill channels by denomination separate coin channels by denomination a mechanical slider for each bill denomination a mechanical slider / release tab / push system for each coin denomination easy bill reinsertion and easy coin reloading a small erasable notes/reference section an overall layout that is compact, portable, and smooth to use Bill Features Needed: The bill side is very important. I want: dedicated bill slots/lanes/channels for denominations clearly labeled sections a slider for each denomination that helps advance or present one bill at a time bills to remain aligned and organized a system that feels smooth and controlled, not messy A major priority is that putting bills back in should also be easy. I do not want tight wallet sleeves that are annoying to reload. I want a design that makes reinsertion/refill simple and practical. Coin Features Needed: I also want: dedicated coin channels by denomination easy access to exact coins a mechanical coin release system, such as a slider, push tab, or similar simple mechanism no loose coin pouch as the main solution clean and organized coin storage easy coin refill/reloading Notes / Reference Area: I would like a small erasable writing section inside the organizer where I can write quick notes, reminders, totals, or general references. Examples: quick math spending notes conversion/general reminders payout notes This could be something like: a small reusable writing panel wet-erase style area mini marker holder if practical What I Need From the Freelancer: I want someone who can help with both: Design product concept internal layout mechanical idea for bills and coins portability-focused form factor Prototype one simple physical working prototype basic but functional enough to demonstrate the concept physically does not need to be production-ready Deliverables: Please include: concept sketches and/or CAD internal layout/dimensions proposed mechanical approach one physical working prototype photos/videos of prototype function before shipping if possible Important Priorities: The biggest priorities for me are: portable design clean denomination organization smooth bill access smooth coin access easy bill reinsertion easy coin refill simple mechanical usability affordable fixed-price approach What This Is Not: This is not: an electronics project a smart device a mass-manufacturing project right now a finished consumer product This is a low-cost first prototype to prove the concept and get the physical organization and mechanics right. Ideal Freelancer: I am looking for someone with experience in: product design industrial design mechanical concepts simple prototype fabrication organizers / storage systems / cases / physical mechanisms Bonus if you have worked on: slider mechanisms coin/bill organizers portable storage products functional prototype builds To Apply, Please Send: your fixed-price quote what is included in your price your approach for keeping this affordable examples of similar mechanical/product/prototype work whether you can do both design and prototype, or only one part Final Note: Please keep portability in mind. I do not want something bulky like a retail cash drawer. I want something compact enough to carry in a backpack, sling, or travel bag, while still being organized and practical to use.