Amazon Mother’s Day is quickly sneaking up on us, and if you’re still looking for last-minute gifts that will arrive in time for your brunch with Mom, we have a deal you’re going to love. If you’re an Amazon Prime member, you can shop the top-selling COSLUS Water Dental Flosser for 30% off and get free one-day delivery with Prime. This means your order will arrive well in time for the big holiday on May 10. Not a Prime member? Don’t fret — you can sign up for a free 30-day trial for Amazon Prime and still get your order on time to take advantage of this limited-time deal. COSLUS Water Dental Flosser  Amazon This Amazon bestseller is loved by customers and for good reason: It’s easy to use, has a 30-day battery life and comes with five dental tips for thorough oral hygiene. Its lightweight design means you can also take it with you on your travels. There’s a reason the COSLUS flosser is the No. 1 bestseller with nearly 50,000 reviews on Amazon.…