How can I get base ETH?

How might one successfully acquire the fundamental currency of Ethereum, known as base ETH? Could you please elaborate on the various methods available for obtaining this cryptocurrency? I'm particularly interested in understanding both the traditional and more innovative approaches to acquiring base ETH. Could you also discuss any potential risks or considerations that one should be aware of when engaging in such transactions? Your insights would be greatly appreciated as I'm eager to expand my understanding of this fascinating realm of digital assets.