Keep a tealight on you, light it wherever you may be
Clean one small area of your house
Do small, unnoticed acts of kindness
Always greet animals, both big and small
Do anything by candlelight
Get cozy and read a good book
Wear colors you associate with her
Practice your patience, both external and internal
Be a listening ear or shoulder to cry on for those who need it
Make compromises when it is healthiest for both parties
Become the one who always has a lighter or matches
Listen to music that reminds you of her
Spend time tending to your body
Leave a big tip the next time you have a chance
Practice kindness in all areas of your life - including driving
Host/organize a gathering of friends or family
Take a hot bath or shower with no time limit
Dedicate the first bite of your food to her
Veiling (can come in many, discreet forms)
Compliment people - both strangers and loved ones
Donate something, be it clothes, money, or your time
Support those who have lost their homes in whatever way you can
Create something - I really like knitting!
Look at photos and embrace the happy nostalgia
Wear makeup or jewelry that reminds you of her
Wake up early to see the sunrise - or watch the sunset
Watch/read about acts of kindess - be inspired!
Many, many, many other things not said here
Additionally, this post is great!
Bedridden devotion to Hestia