Some of them are connected to the water line, so I use a german commercial solution that irrigates 1-2-3 times a day for x seconds.
I just hacked the electric signal of the valve with a cable, sugru and 3d printed parts to control it with a raspi, so it is dynamic, based on the weather and water sensors, so water is not wasted.
Other plants are not connected to the water line pipe. So I use terracota recipients and a raspi controlled deposit of water to add some water the terracota will absorb by capillarity and irrigate the plants this way.
There is no better system to irrigate plants than capillarity.
I fill the deposit manually once a month or so.
I also brought a bread-pizza mass machine as in some countries there is no good bread like in Spain or France, this way I could design my own custom cycles depending on parameters like the weight of the bread I will make. Automating it was super simple.
I created a book reader-digitalizer, all my books are digitalized, OCR.... The hardest thing to do was flipping pages. At first I used vacuum with a super complex system. A year ago or so I simplified it enormously with just a cheap Chinese electrostatic device.