Can I start trading with $1?

Could you please elaborate on whether it's feasible to commence trading cryptocurrencies with just a dollar? I'm curious about the practicality of such a small initial investment. Would it be sufficient to gain exposure to the market, or is it merely a symbolic gesture? Could you also discuss any potential challenges or limitations I might encounter with such a minimal investment? Additionally, are there any specific platforms or exchanges that cater to low-capital traders like myself? Thank you for your insights.