I have previously written an answer to a similar question, but I am writing an answer here tailored to your situation.
There are several aspects to your question.
First, you should be aware that some corporations are no longer issuing new paper certificates. This includes Disney. Eventually, paper stock certificates will be a thing of the past.
Second, when you purchase stock in the normal way, through your stock broker, the shares are held in "street name," which means that the shares are titled to the stock broker, and the stock broker keeps track of the fact that you own some of the shares. You can ask the broker to put the shares in your name, and you can also request that a paper certificate be created and sent to you, but some brokers no longer do this, and those that do charge high fees for these services, as the brokers want to discourage this.
Third, there are additional considerations when you give shares to a minor. This is location-dependent. In the U.S., this is normally done using the UTMA (Uniform Transfer to Minors Act); an adult custodian is named (often a parent), who is in control of the shares until the minor reaches a certain age of majority, which varies by state. Other countries will have other rules.
If you want the easiest way to give 1 share of stock with a certificate for decoration, there are companies that specialize in this service. They take care of acquiring the stock, registering it to the recipient's name, obtaining the certificate, and even other services like framing and engraving. Two of the companies at the top of a Google search result are Give A Share and Unique Stock Gift. These each have a list of stocks that they sell. For stocks that are no longer issuing new certificates (such as Disney), these services create a replica stock certificate that they send along with a real electronic share of stock.
The two services I named sell both Disney and Berkshire Hathaway. As I mentioned, with a Disney share (DIS) you will get a replica stock certificate. Berkshire Hathaway does still issue paper certificates; these services sell Class B shares (BRK.B), which are a fraction of the cost of Class A shares (BRK.A).
The other three stocks you listed are not available from either of these services. They don't have much for international stocks. There may be similar services in other countries that have more international selection.
As for dividends, when the share of stock is registered to your recipient's name, the corporation will mail a paper check to your recipient every time a dividend is issued.
