How to get free coins in crypto?

I'm curious, what are some effective strategies for acquiring free coins in the cryptocurrency world? Are there any specific platforms or promotions that regularly offer free crypto as a reward? And what's the catch? Do these free coins come with any strings attached or are they truly free to claim and use as one pleases? It would be great to hear about any tried and true methods for boosting one's crypto holdings without having to invest additional funds.