At least TradeDirect and Swissquote allow for the holders of Swiss shares to be written on the company registry. This allows the company to know you are one of their shareholders. They invite you to their shareholders meeting where you can vote on various subjects, most notably board elections and accounts approval.
Some companies offer special perks to their shareholders, see the dedicated thread for that: Free Shareholder Swag in CH
They usually have nice buffets that can make it worth it for students to buy one share of a company if they’re priced cheaply and get the “free” meal (it’s not actually free since it’s paid with money that could have been used to benefit shareholders in other ways). Of course, you have to deal with the heavier fees of Swiss brokers to do that so striking the right balance might not be an inconsequential task.
Of course, I’d be deluding myself if I thought my tiny, tiny vote is going to change the way the company is being run but hey, I like to enjoy the full benefits of my shares. ^^