I used to be able to buy them at Airport Plaza at a little stall there but its not there now.

They used to cost around 100 baht so where great as i didn't care if they broke or i lost them, which of course i always did. You can get some with bendy arm bits but being bendy isn't a necessity.

Anybody know where they sell these?

Everywhere. Panthip Plaza, downstairs, the 65 Baht Japanese shops, KSK pharmacy on 2nd? 3rd? Floor, Airport Plaza vendors sell them off of carts up there. I've even seen them in Mini Marts. I bought one pair from a vendor downstairs at Panthip Plaza and one pair at the Japanese shop inside Rimping near Airport Plaza.

They sell them in Mae Rim Post office also.

Tesco Express near Chang Puek gate has them.

OK, POINT TAKEN

I wasn't trying to prove a point (honest!!).

To tell you the truth I wasn't sure myself where I bought them.

Thanks for letting me know they are still out there.