I don't know about you, but being such a creative person I find myself board ALL the TIME! Over the years I have found many activities that don't just make me forget I am board, but also give me a task, or project. (and I am sure you all know how much I love projects)
First on my list is building a fort, this is a good way to pass some time no matter what the season, if it is hot, build an air fort. If it is cold enclosing a small area will conserve body heat. Outside you can build igloos if there is enough snow, you can use a trampoline if you have access to one, or a tree house. Inside you can use boxes, chairs, cushions, pillows, blankets. You can spend as much time setting it up as you want, you can also make it as big or as small as you want, and of course you can invite friends, family, and pet into your fort.
Next on my list is to play shadow puppets, if you put a bunch of work into making a fort, or even if you don't, shadow puppets, or shadow theatre is lots of fun. Even if this isn't one you can do by yourself, or at least it isn't a lot of fun by yourself, it only takes two to have a blast that can last hours.
Learn morse code. I started teaching myself and my younger sister morse code to entertain us. I mean, who doesn't want to speak a secret language? It doesn't even need to be morse code, any code will do, try learning ASL. ASL would be more useful, but harder to learn than morse code. Morse code is just what I chose to learn.
Practice a foreign language, this one is similar to the last one, but you have a few more options, you can watch a movie in a foreign language and try to pick out words you recognize, or listen/read a book. You can play online games, there are apps and resources everywhere! Learn the words to a song in another language, You can even learn Tongue twisters in a foreign language.
Learn hand clap games, my mom taught me, when I was very young "I caught myself a baby bumblebee, won't my mommy be so proud of me. Yes, I caught myself a baby bumble bee, ouch! It stung me! I am smushing up my baby bumblebee, won't my mommy be so proud of me, Yes, I'm smushing up my baby bumblebee, Ewww! It's all over me! I am wiping off my baby bumblebee, won't my mommy be so proud of me, yes, I'm wiping off my baby bumblebee, Eww! It's all over you. " Who doesn't know Mother Goose's pat-a-cake, pat-a-cake baker's man. Learning new hand claps can be lots of fun they can get really complicated or be really simple. Jump rope songs, or tongue twisters are about the same thing, but you can search them and get different results.
Make art with natural materials you can gather materials on a nature walk and building lots of stuff! Let your imagination go wild and feel free to use Pintrest for inspiration, make your own paper, make your own paint, make your own paint brushes.
Shop at thrift stores, second hand stores, buy junk for fun. Wasting money is a great way to forget how board you are. Find something that you can use, and it will keep you busy longer.
Play hopscotch, dance, exercise, there are simply too many exercises that you can do with anything you have, for you to have any excuse not to exercise.
Play pranks, be nice, but be creative, and be prepared for retaliation. Don't dish it out if you can't take it. Or watch prank show on tv.
Cook from scratch, this is a hard one, but very time consuming. So many options!
learn about growing a garden / plants/ Forging
Build a kite, or build paper airplanes
Write a story, poem, or blog
Clean/do chores
Play cards, or board games
Play games with friends/sleep over
Mad libs, mazes, word searches, word puzzle, puzzles
Learn to play an Instrument, I pretend to play the keyboard, but, I do It outside where my family can't hear me. Not by my choice.
Perler beads, necklaces, key chains, home decoration, organization
Detox bath, tea bath, bubble bath, oil bath, candles, food tray, shower
self care, paint nails, do hair, pamper yourself
Start a fire/ light a candle, roast marshmallow, roast bread on a stick, Shish kebab, grill, sing, be loud, burn spices to keep bugs away, or burn chemicals to turn the fire colors, enjoy being outside, just starting the fire can take some time.
Spend time with animals
Virtual reality, Field trips, one of my favorites! Or volunteer
Sew, Crochet, Quilt
Take quizzes, there are quizzes that tell you your love language, your Disney side kick, your taste in clothes, how old you are, What your friends like most about you, your ideal boyfriend's qualities. Really fun to do with anyone and compare answers.