Still not confident enough about new projects (especially for the HAD Prize) or continueing old ones :-/

wool-gathering [fig.] of new projects

• Decorative Garden Hydrogengenerator - Generates Hydrogen from unused Solar Power. Project cost about 150€ in Parts

• Decorative Garden Physical Solar Energy Storage contraption. E = m * g * h; with m=100kg, g = 10 m/s², h = 2m ==> E = 2000 Ws which probably equals 46 Ah @ 12V (My Solar Power Battery has 9Ah!) Costs? Uncertain :-/ In my mind is something like a small scale hydroelectric power plant
• Warp Core :-P

Is there also an unsunk cost fallacy? :-/ hmm...