This research examines the importance of cultivating an entrepreneurial spirit and character in the younger generation, as well as the potential and opportunities for the flower bouquet business as an example of young people's creativity in facing the modern era. Through literature reviews and practical observations, this research explores the vital role of entrepreneurship in economic and social development, as well as its benefits for individuals and society. The main focus is given to the flower bouquet business as a case study, explaining the manufacturing process, tools and materials used, and the market potential it has. The research results show that the development of an entrepreneurial spirit in the younger generation not only contributes to economic growth, but also facilitates self-actualization and social innovation. The flower bouquet business was identified as a promising opportunity with affordable initial capital and significant profit potential. This research concludes that encouraging entrepreneurship among the younger generation, such as through the flower bouquet business, can be an effective strategy for increasing creativity, financial independence and positive contributions to society.

The waste processing and renewable energy are being the issues in the industrial 4.0 era. Kitchen and organic trash in the rural areas will become a disaster if there is no solutions. On the other hand, kitchen and organic waste have a positive side, that they can be converted into biogas which can be converted into electricity. On the Minister of Energy and Mineral Resources Regulation Number 27 of 2014, supports the development of biogas and will buy electricity from the biogas conversion. The potential for biogas that obtained by the organic trash per 1000 people is 7619.8 liters of biogas, it meas that the energy contained is still abundant and the production can still be increased if processed with a modern digester system. This research produces a tool in the form of a portable digester that named GenBIoT (IoT-based Biogas Generator) which can be used by the public to produce biogas that  used by home industries or general factories. This research used the research method that similar to System Development Life Cycle (SDLC), this tool is built with several stages starting from planning analysis, designing, functional testing, data analysis and reporting of the results or implementing this tool that can be used as an alternative, as a cheap and easy source energy. This tool is based on the Internet of Things so that this tool can be monitored regarding gas pressure in the reactor, biogas volume and it will detect if there is a biogas leak so it will displayed on the system. To produce the maximum biogas composition, 50% of cow dung is required, 40% of kitchen trash and 10% of water with a ratio of 5: 4: 1 so it will produce 40 kg of biogas with a volume of methane gas (VGM) 0.11 m3 of biogas for cow dung. and 0.04 m3. The third experiment becomes the basis of future biogas production with energy produced from biogas per day of 716.39 Wh