For me, much of energy saving comes down to chipping away at little bits until they add up.
e.g. I measured the under cupboard strip lights in the kitchen and found they are using 40w between them. On all day (otherwise the kitchen gets dark) and that adds up to almost £200 at next year's prices. So they can get cut right down/off.
There is a little drink cooler fridge we inherited when we moved in. Tiny. Next year it'll cost £110 to run. So off that goes.
We have a small PC that runs hard drives where we store bought films. Next year: £105. Off that goes.
Freezers in the garage set to -22c. Changed tempt to -18c and saved around £50-75 over the next year.
The kettle, used for 15 mins a day (i.e. 3 or 4 full boils) will = £190 a year. So savings to be had there.
What has struck me, is just how often online help is outdated now prices have gone mad. When you look at advice regarding energy saving bulbs the line is often "they cost pennies". They don't anymore. We have energy saving smart bulbs that I installed because everyone was leaving lights on - these cut off in places like hallways where they are not needed full time. I've totted up the wattage/average use and calculated the total cost of these next year at £335. In the old days they would have been about £6.40 per month so not cost-prohibitive. But with next years projected costs, they are no longer cheap to run and their usage needs to be considered.