haha cos i'm living with my parents temporarily. chinese weed is so fuckin bad that smoking solely joints is uneconomical, we smoked 8 the other night AND a blunt AND grav bong hits and got to a 7 (1-10 scale, 1 being sober 10 the highest u've ever been).
but yeah there are some REAAAAAAAAAAAAALLY cool selections on taobao. check out that ROOR shop for sure, and the 'REGGAE HIP HOP' shop (lol) is also really good for some cheap ass shit.
why are you trying to conceal a bong, i only use one when i know im not gonna have to conceal shit like at my house or something. im not gonna be trying to discreetly smoke out of a bong on the highway or shit lol, save that for a joint
thanks for the hep, i will hit you up when making my decision
also i got mine off taobao, which is primarily a chinese service, but the existence of 'taobao agents' more elaboration on this site - taobaofieldguide.com allows you to order internationally and possibly save a significant amount of cash.
e.g. my bong is 28 cm and cost ~22 USD (sans shipping, which was under a dollar since i'm local).