Unfortunately I agree with those citing the downside problems. Human nature being what it is, the loans will at some time be assumed gifts and not returned. Most things are considered worth what is paid for them, so what is provided on the cheap will become thought of as essentially worthless. If the deposit charged will pay for replacement when needed, the recipient can pay for the purchase of same.

Let's encourage away; offer free advice; offer pithy comment; maybe even offer to hone a razor for the beginner, but stay out of the rental business. There are too many headaches behind that storefront.