Ravelry: Pineapple bag pattern by Rose Hernandez (Free Crochet Pattern)
Crochet bag with pattern.
Румынское кружево ... большая подборка.
I don't have jeans with flowers like this, but maybe could still do the two-toned layers with a strip of lace between them.
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crochet - bag - Ravelry: Inga's Häkelbeutel pattern by Inga Joana Mertens - this is single strap variation two squares instead of patterns less to create deeper vee
Patterns templates of bags - Club of needlework - the Country of Mothers