What I thought I could do would be to dry them and use them as Christmas decorations/to scent the air.
It's simple and it goes like this...
Step 1: Collect your oranges/lemons
(mine was one of each because that's what I put in that batch of mulled wine)
Slice into 1cm thick slices (about half an inch) or slightly thinner if you're good with a knife, I'm not.
These are not the fruits I used, just an illustration. I used heavily stained red ones.
Step 2: Microwave the slices
Put your microwave to 50% power or defrost and leave your slices in for 7 minutes at first.
They should be still slightly flexible, not crispy, but not juicy.
If not, put them in again for another 2-4 minutes and repeat until satisfactorily dry.
Step 3: Get creative!
Attached are some ideas.
You can even put some glitter on them, although I'm not going to because I'm planning on making a spiced liquor out of them when they have served their purpose! Instructable to follow if it works!!!