Where to find record cleaning platter?

Here:

Search for this on Amazon…Lazy Susan Turntable Organizer, Non Skid Large Lazy Susan Turntable for Cabinet, Computer or Laptop, Plastic Turn Table, Black 10 in, 1 PC - by RamPro

Just glue (epoxy) an appropriately sized flat head screw to the centre and add a rubber or cork mat… and you have a manual TT for cleaning

@ticat What I'm looking for is specific for hand cleaning records and is already manufactured. 

Something like this?

https://www.ebay.com/itm/283863243794?chn=ps&_trkparms=ispr%3D1&amdata=enc%3A1iNvl9LmaT5ad-9mhOnIAgg22&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&mkscid=101&itemid=283863243794&targetid=2319404999269&device=c&mktype=pla&googleloc=1014046&poi=&campaignid=21222256297&mkgroupid=167054596991&rlsatarget=pla-2319404999269&abcId=9408285&merchantid=118933951&gad_source=1&gclid=CjwKCAjwxY-3BhAuEiwAu7Y6s06h7G3hoRGs8ImGqAbqpDIeUplrndGBjamKb22CcZvTQoZxOthxJxoC2fwQAvD_BwE

I made mine from a a Lazy Suzan, it is a set up that is set slightly of vertical and a added Spindle penetrating through to the rear enables a Battery Drill to be attached.

I now have variable spin speed and a Clockwise / Anti clockwise rotation.

Another type of attached drill would give non-rotate pneumatic action, but I am yet to convince myself the action is a benefit, it would be more akin to a clean and massage      

+3 lazy susan, with cork mat here. Purchased a Empire spindle off of ebay & glued that right in. (center)