Daniel Caplan died in December aged 17 after being diagnosed with a brain tumour just months before.
Two-year-old Flora was diagnosed with stage four Neuroblastoma in April and is now receiving intensive chemotherapy.
Jill Davies' house in a South Lanarkshire village was destroyed on Sunday.
All the money raised will be donated to Chest Heart & Stroke Scotland (CHSS).
Callum Beattie also dedicated his song 'Warrior' to 15-year-old Aidan Hogg.
Esther Wright and her puppy Reiley will sleep in their garden to raise money for the Bethany Christian Trust.