I'm planning on setting up an all-in-one touchscreen+computer+monitor ($300 on eBay) as a glorified family to-do list manager and photo frame... any software re

I'm planning on setting up an all-in-one touchscreen+computer+monitor ($300 on eBay) as a glorified family to-do list manager and photo frame... any software recommendations would be appreciated! (For instance, not sure how well supported the touch screens are on Linux, etc.)