These are recent images I converted to vectors with this command:
for i in *.jpg; do convert "$i" "`basename "$i" .jpg`.png" && autotrace -despeckle-level 15 -color-count 6 -input-format PNG -output-file "`basename "$i" .jpg`".svg -output-format svg "`basename "$i" .jpg`.png"; done
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Try it!
this is a remix of inky2010's "CHRISTMAS 0010", a "linear" Advent wreath. As this is my first time (re)creating a vector graphics, you may find a lack of details like grouping etc.