Heat-sink as add-on?

[vinodmenon80]

Its been a while since I heard anything here. Any heatsinks that we can procure to use on the Pine A64? 
I had a look at Bang Good and found they have variety available.
I also came across this Ceramic heat sink measurement
Alternatively aluminium casing that look cool & keep hardware cool.
What do y'all think?

Like to get some feedback.

Thanks.