Hello LostInAmsterdam,
There's not much info in your post to give useful replies ! If you HAVE to use the miles before end of June, you better get booking some premium cabin flights ASAP to Bangkok or beyond !
However, note that miles expiring in June means bookings have to be made before then, rather than Flights taken before then.
Do you have any GUP vouchers from your time as Gold left ? Have you used your 2012 Gold Award (50% miles reduction).
Are Hotel vouchers a sensible way of banking some value from expiring Miles ? (IMHO, give OK value if used at top-end properties). These are valid for a year from issue.
Perhaps if you give some more details, you will get some better responses !
Regards, Graham