Lightning extension cable?

I recently purchased a SanDisk iXpand Flash Drive to use to move photos from my iPad to my MacBook. Works ok, but fits awkwardly on the iPad (or iPhone). There are extension cables (very few apparently) that should work and fit better than the iXpand connection, but most seemed to be priced at $25 or more. There are a couple on Amazon at $10 but some reviewers say they don't work. Anyone use a cable with the iXpand or any other accessories? Recommendations? Thanks.

I do that at home ok, but want something when I am out taking photos and don't want to carry the Macbook with me.