A nice gravel riverbed could do the same?
https://www.amazon.com/WANBAO-Adhesive-Squares-Backing-Coasters/dp/B08G8RKNP9/ref=asc_df_B08G8RKNP9/?tag=hyprod-20&linkCode=df0&hvadid=459725928622&hvpos=&hvnetw=g&hvrand=10894676934470384028&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9012119&hvtargid=pla-978981186675&th=1
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Great to hear from you @m_raynsford. You were a major mentor for me in getting into this laser thing. All the best!
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