1. Amazing artificial intelligence software available at little to no cost.
2. High voltage pulsed power supplies can be ordered from AliExpress (e.g. https://www.aliexpress.us/item/3256805726224230.html?)
3. High voltage RF power supplies can be ordered from eBay (e.g. https://www.ebay.com/itm/293764271074?)
4. Mathematica available on Raspberry Pi ( see https://www.wolfram.com/raspberry-pi/)
5. Open source alpha spectrometer (see https://github.com/ozel/DIY_particle_detector)
6. Open source gamma ray spectrometer (see https://github.com/OpenGammaProject)
7. Low cost/open source PCB design software (see https://www.3dsourced.com/3d-software/best-pcb-design-software/)
8. Low cost/open source CAD design software (see https://www.3dsourced.com/3d-software/open-source-cad-software/)
9. Low cost/open source EM design software (see https://en.wikipedia.org/wiki/Comparison_of_EM_simulation_software)
10. Prototype machining available at low cost (https://www.protolabs.com/)
11. Public domain high energy physics and accelerator design software (https://geant4.web.cern.ch/)
12. All specialty parts and materials can be ordered online.