I give you an alternative besides throwing them or recycle them ... you can make Vases out of them
For my alternative I have different coloured plastic bottles
So You need at least 1 bottle and Tools
(on my inscrutable I use 4... for making the vase )
Yo can use as many you wish.
Please excuse the fact that it's my first DIY and if you want you can post as well your versions!
CAUTION: for cutting I use sharp tools so take care what you cut !