small longterm passive investment, lemon

lemon juice
dry lemon
freeze lemon
achaar
lemon peel powder bakery
lemon dry powder
---
solar power
solar motor
duck weed double every day
feed to fish, hen, cow,
---
duck weed + gold fish 7
gobar as khurag
chappad
---
nvideo gtx 1060 x 6
each 18k

power bank: 25 or 35

mother board: 18k

solid state drive: zheino 5k
cpu: 40 pound
---
2000 pound

investment : 3lakh
2 person research

2.5 months