Think Start Inc. Mohit Rajhans speaks on how trends in online marketplaces can help parents get some great deals and help you declutter.

From upcycling to reselling to decluttering, there is a market for many things used these days, and several different online tools you can use anytime of year to help you get the most value as buyer and seller.

- Recommerce — selling previously owned items — is huge and growing. Sustainability-conscious millennials, in particular, embrace “thrifting” — buying second-hand goods for dimes on the retail dollar.

- Upcycling has become an emerging trend among consumers who want to draw attention to the problems of overproduction and overconsumption. The Instagram tag #upcycle currently has over five million posts, including images of upcycled art, clothes and DIY furniture.