Guest shark Nirav Tolia; a solution to a problem for swimmers; a tool to help cat lovers find their perfect match; a product designed to encourage children to wash their hands; a beauty line inspired by a woman's African heritage.

Nextdoor co-founder Nirav Tolia guest sharks; a healthy food delivery service; an online platform for couples about to tie the knot; a nutritious take on a classic dessert; an online tool to help off-duty firefighters make additional income.