Hi,
One solution I can see would be to use HikaMarket Multivendor so that each person becomes a vendor and can publish a list by actually creating a product via their vendor control panel.
The donation system of HikaShop Business will be able to be used by the products created so that the persons looking at the website would be able to chip in for a product (a list) and the vendor would then receive the money.
You'll be able to get a commission on the transactions if you configure them in HikaMarket.
If you don't publish the products listings, people won't be able to see the products unless they get the direct link to the product page (the product will be published but no listing will display them).
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.