If you downloaded the book from my previous post you may have seen this.
The BF2040 is such a device. The maker declares them to be "unconditionally stable". At 28 cents each and free shipping it's a bargain.
I had a small strip of each in an envelope ready to send to NZ and the postmaster said $13.50 was the minimum! Ouch!!
You can buy 48 BF2040s for less than that. Last time I had this happen I simply gave my friend the info and he got a reel of the Jfets for less than I could send them.