That said, if you do want to knock their socks off, we have some ideas for over-the-top forts they’ll be talking about for years to come. Building blanket forts can take as much time as you like, be done over and over again with new twists and variations, and be enjoyed for minutes, hours, or days before you take it down and start anew. We think this ranks up there with one of the best things to do indoors (if not the best). With this guide, you’ll have the knowledge you need to build the blanket fort of their dreams.

Light blankets, spare sheets, beach towels, and tableclothsSofa cushionsLaundry clips, clothespins, binder clips, or chip clipsString, wire, or yarnDictionaries, phone books, or other heavy (non-breakable) items

Clothespins are perfect for hanging linens and attaching sheets together. (Binder clips and chip clips work just as well.) Turn to string, wire, or yarn for expanding your fortress, tying your fabric ceiling to knobs, pulls, doorknobs, and even hinges for extra support. Use books to secure fabric on tables, bookshelves, and other raised surfaces, so fort-dwellers can crawl underneath. When planning your fort, examine the walls and ceilings: You want to start high. Hang light fabrics (sheets, ideally) to securely mounted light fixtures, high shelves, curtain rods, or floor lamps and connect them to other sheets with clips to build a raised ceiling. Secure the ends of your fabric under furniture legs to make your fort bigger.