What converts best on parked domains
 

I have about 60 under developed domains (adult keyword rich). just parked doing nothing right now.

what should i put up there, that converts well on parked domains ?

I'd predictably go with very basic landing pages for a highly converting sponsor in the niche related to the keywords in the domain

Show us the list.

XVDO by XPays works on a lot of our parked names. Point domains straight at your link and you are ready.