This paper describes the construction and operation of scaled-down or simplified solar energy devices that can be used in secondary schools which offer the Environmental Physics option at the Advanced Level of the University of Cambridge General Certificate of Education Examination. This type of activity will sensitise students to the virtues and viability of solar energy conversion as an environmentally sound practice as well as assist them in understanding the fundamental scientific principles involved in harnessing solar energy. Students have built and tested cost-effective versions of a wire basket solar crop dryer, a cabinet-type solar crop dryer, a solar water heater, a solar still and a solar box cooker. These devices were built as final year projects for the BSc degree of the University of the West Indies, St Augustine, Trinidad or as part of the 2020 Project for secondary school students organised by the Ministry of Education, Barbados, UNESCO and the University of the West Indies, Cave Hill. The introduction of this technology at the secondary school level will also be reinforced by mounting workshops for secondary school teachers who can also enrol in the short courses or the Diploma or MSc programmes in renewable energy being developed by the University of the West Indies. Teachers will then be fully equipped to transfer this technology to their students.