Thanks.
After I posted I really dug in looking and there are not many CPU coins out there.
Even the new coins seem to be starting off at GPU levels. I think Grin needs like a GTX 1070 minimum on day one with 4gb+ ram.
I was hoping that there was a CPU one out there and with free hardware running partly on battery would cut back startup costs but no luck.
Grin is a great project, I highly hope it hasn't started price like Zcash did because at least that coin had huge price, then felt. Grin is still falling, I think it will skyrocket soon and then will fall and fall.
Is there any better option than Monero? I don't know, even with free electricity, it's very hard to profit. But I know in places where people use computers and electricity is paid by business owners, monero miners are running silently. You can't imagine but monero miners are even setup on ATMs where I am as for now.
What about HDD mining with your laptops?