Ok, one more experimental thing I did at home, something I long meditated doing but didn't know how. Incline bench press (=targets more the upper chest and a little bit of the front delt) without the incline bench .... at home!
Measured by the photometry (by analysing the video), the body's lying while being precisely 30 degrees inclined from the ground*, which turns out to be the ideal angle to target the upper chest (with 45 or 60 - which you find more commonly in gyms, going much more for the front delt/shoulder than the chest).
*I simply estimated it by my theoretical knowledge of the lift as I was setting it and myself up ;P and it turned out to be correct
Not really heavy, 42 kg (70% of bodyweight, as in pushup), but it was experimental. But at least I know how the 42 kg felt to see how to set it next time.
@Godmy, as much as I have confidence in what you are doing; as much I don't have trust in that wooden chair. Please consider investing in a professional barbell rack or at least solid metal chair. Thanks.
Anyway, some of the chair motion here seem to me now as undesirable, I'll try not moving it at all in the future. May also go just for the dumbbells, although there it's harder to get them up from this position.