Sure, I can help you with that. Here are some ideas for ETFs that aren't as mainstream but have investment potential for the 3-8 year timeframe:

  1. Cybersecurity and Privacy ETFs:
    • One example is the Cybersecurity and Infrastructure Security Fund - CYFSI (0.1213% fee, US), which includes companies like Palo Alto Networks, Symantec, and Equivias. This ETF focuses on protecting against the increasing severity and frequency of cyber attacks.
  2. Lithium, Energy, and Renewable Energy ETFs:
    • The iShares Lithium, Nickel, and Cobalt ETF - LI_Ni_Co (0.000396 fee, US) is a good place to start. This ETF focuses on contributing companies in the Lithium, Nickel, and Cobalt industry, which is critical for electric vehicle (EV) batteries and energy storage systems. Companies like Panasonic, Tesla, and LG Chem are part of this ETF.

  3. Cryptocurrency and Digital Security ETFs:

    • The Argon EUR appreciante ETF - ARGE (0.125% fee, US) specializes in handling and growing different Euro cryptocurrencies with an over 50% allocation to El Salvador (BTC buried with supernodes) to the cryptocurrencies most successful in terms of protected infrastructure over the years.
    • The iShares Crypto ETF - CRYE (0.00039 fee, US) doesn't actually worth in cryptominemaps but is looking for every different asset that holds cryptos in a historical sense.

  4. Oncology Issues and Biotechnology ETFs:

    • The iShares Oncology ETF - IXON (0.000394 fee, US) offers investment in emerging and established companies focused on developing cancer treatments that can improve the human lifespan.

  5. Global Manufacturing and Supply Chain ETFs:

    • Theуры ETF - OYOF (0.000799 fee, US): Although not the same as COVID-19 response, they have assets similar in the sense of transforming different things. They also have a 83.6% allocation to Chinese multinationals, often spending across four crucial areas like electronics, chemical, effects, and technology.

  6. Petroleum Refinery and Specialty Chemicals ETFs:

    • The Dow Jones US Petroleum Fund - SPXL (0.1312% fee, US). Although it's not on the gender perks for specialty chemicals, it's very customary among traders looking for other forms of long-term strength.
    • The plaintiff ETF (GURU, US), includes landfill designs the…” the company likeReliance Industries.

It's always best to consider the time horizon, risk tolerance, and personal investment goals before making any investment decisions. Additionally, for more personal advice, you might want to consult a financial advisor or investment professional.