I get asked a lot about what I recommend for yoga...
​Here's my answers:

LEGGINGS

Anyone who knows me well sees me in Lululemon gear 90% of the time.  My most favourite legging for yoga is the Align Pant.  Lots has changed in the company since I began buying from them, but I still have a lot of love for the thoughtful details they pack into their clothing.
You can find my fav leggings here:
And full disclosure - I love them so much that I am affiliated with them.  This is an affiliate link and I receive commission on purchases made.  That being said, I would endorse these even if I wasn't being paid.  They are my FAV. High waisted, buttery soft, and worn daily...

YOGA MAT

You won't see any variety here.  There is only one.  And it's my Manduka Pro mat.  I have an original, and have been practicing on this mat exclusively since 2011.  
It is an investment when compared to the $20 mats you can get at the grocery store.  But it offers so much more.  It is much thicker than any other mat out there, has a lifetime warranty, and has a sticky surface to prevent slippage (this is a big deal for sweaty, long yoga practices and sticking my grip when I'm upside down.)  It helps cushion my knees, elbows and allows me to play longer with my practice.
I don't travel with this one - he's hefty!  I pack a yoga towel with me wherever I go, and usually have a Maduka Pro at my destination.  My first "home" studio in Calgary has them, and I steal my Dad's when I'm there (I made him buy one too.)
I am not an affiliate with the Manduka company and receive NO benefit from endorsing their products.  I just love what they have.
All the props.
First off - most of this stuff you can make do with things lying around the house.  Try books, belts, dog leashes, boxes and pillows.  And if you still want to make a purchase...here's my list of fav's.  (Again, not endorsed by any of this companies...)