Oh, poor you Monika!
Here are some suggestions:
Rearrange all your books in your shelves. If they already are in alphabetical order, then put them in colour order. Or according to size or width.
Mend all those clothes you've been meaning to, but never did.
Read/write some slash.
Bake a cake. Preferably a complicated recipe.
Write an indignant letter to the editor of your local paper. About how ill-behaved and spoiled the youth is nowadays,
or how annoyed you are by the traffic/dogs/new year's fireworks (it's never too early to complain), weather, cats, uneven pavements, prices, tv programmes, neighbours, etc...... Sign it 'upprörd skattebetalare'.
Start planning your next trip. You've already been home several weeks!!
Clean the bathroom.
Think about all the fun we're gonna have in Stockholm in November!
Hope this helps!
Me? I'll have a friend coming for a visit.