IBM Lenovo Thinkpad T60 T60p 15.6 inch ATI Laptop Motherboard 44C3714 – Primelec
IBM Lenovo T61p Motherboard « frgmnt org
IBM 42X7351 - Laptop Motherboard for ThinkPad T61
T700 crowdfunding: a new custom motherboard for good old T60/T61 Thinkpads - with 11th gen Intel and up to 64GB of DDR4 - has a great chance of coreboot opensource firmware support