Something I am thankful for that starts with the letter "X" is........

Xylitol :)

The x in math problems (sometimes LOL)

Xylem (helps keeps plants alive)

I am thankful for x representing a kiss on a card.

I am thankful for the idea that X is a variable signifying endless posibility in this world :)

X-Files.. and netfliX. lol

I am grateful for xylographical pieces. They display such beauty and the creativity of someone to engrave it...or memories together with someone if you've engraved initials or something yourself. (x is hard )

xx which stands for "kisses" ;)

Xenial

x-mas! <3