If there is a search filter within Amazon to easily find lendable Kindle books, I cannot figure it out. I almost think Amazon doesn't really want Kindle users to find lendable books because they'd rather everyone just buy a book. This seems odd, since Amazon seems to always design site features with the customer's needs and desires as the primary driver. Oh well, maybe I just can't figure it out. But, the following Google search seems to surface many lendable Kindle books. Just enter it into the Google.com search box (keep the double quotes intact):
"Format: Kindle Edition" "Lending: enabled" site:amazon.com
(direct search link for your convenience)
I've got to say, the lendable Kindle books are mostly self-published, $2 and $3 books. You'll find very few books from prominent or currently popular authors. Fact is, the big publishing houses (or major content owners) would rather you buy a book, than have it lent to you.
In my next post, I will highlight the difference between "sharing" and "lending" books on a Kindle.