What DIY can I do in my home to make my room more fun?

Buy a cheap plastic table and make a checker board on the top

Pillow, pictures, and a little paint will make a big difference. Look through your closets and see if you hvee any vases/containers you can group. Add a splash of fun with occasional fresh flowers, which can be bought at a grocery store for $4.99. Visit your local thrift store for fun, quirky items.

I love the new wall decals, butterfly wall decor

https://www.amazon.com/s/ref=nb_sb_ss_i_6_25?url=search-alias%3Daps&field-keywords=vinyl+wall+decals+dandelions&sprefix=wall+decals+and+dandelion%2Caps%2C268&crid=1UBERK4FLA3YM

https://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=vinyl+wall+decals+cherry+blossom&rh=i%3Aaps%2Ck%3Avinyl+wall+decals+cherry+blossom

https://www.pinterest.com/search/pins/?rs=ac&len=2&q=butterfly%20wall%20decor&eq=butterfly%20wall&etslf=NaN&term_meta[]=butterfly%7Cautocomplete%7Cundefined&term_meta[]=wall%7Cautocomplete%7Cundefined&term_meta[]=decor%7Cautocomplete%7Cundefined

Add some color whether curtains, new sofa pillows, lampshades, a new picture.

Mirrored ceiling! lol