I use lavender, apple and vanilla Triorden...there's lots but they are my favourite and I'd need to consult my book! There are a few that aren't safe but for sale?! As in, not safe for general use...you need to do an actual whole other course to learn what to do with them! One example is fig leaf off the top of my head! I put "safe" purely out of habit!
Although, there are some tree based oils I wouldn't use such as ceder oil. Smells very nice as a room fragrance, but as Ceder is an unsafe wood for birds, I'm sort of funny about it? In the "just in case" way?
I'm very lucky, I trained in aromatherapy massage just for fun so I always make sure I have lots of wonderful smelling essential oils around!
Di, you would be more than welcome to come and have some wine

It is very, very nice.....Christmas in a glass! I've made another huuuuge vat this afternoon of the alcoholic one for customers to have tomorrow lol - and us, obviously
It will be my second tureen this week lol! I made non alch. for the lovely kids that deliver papers for us as well as half a ton of mince pies and shortbread....they've cleaned me out of those every day this week - I've even more in the oven now!!!!
That's ANOTHER way to make the home smell lovely - bake lots of mice pies LOL!
We'll be smelling cinnimon and cloves until next christmas at this rate......