Depending on both sets of parents ages and situations, can you not ask them if you can borrow some money?
Could you or your partner do anything like tuition, babysitting, ironing or some kind of odd jobs in the next 2 weeks for cash in hand?
Can you use your overdraft if you’re not already, or get it extended - even just by £100-200 to help with Christmas?
Do you have a coin jar? I know it wouldn’t give you a fortune, but count up the coins and take them to a bank, it could help towards something for Christmas.
I always make a few presents each year - used to be purely for my enjoyment, but now mainly due to lack of available cash, and these are always well received. Depending on where your skills lie, and what materials and tools you both have access to or could buy cheaply, you could do this too. I love sewing, and I’m making a kitchen apron, and juggling balls and a bag to store these in - I had all of the materials at home. I’ve made children’s dresses, dolls outfits, finger puppets and monster-type soft toys before too.
This year I’m also customising a jumper I bought cheaply with appliqué details. I’m making chocolate mendiants and shortbread too - both are very easy to make and low cost. I wrap them in sellophane from Tiger (£1 per roll), and fasten and decorate with ribbon & a Home made gift tag.
Pinterest is wonderful for ideas.
You could potentially make chutney, jam, ginger syrup, or jars of sweets - re-use any jars or bottles from home - just sterilise first.
I also go and cut some lengths of holly and wrap with brown parcel paper and fasten with ribbon or twine, and that makes a nice little gift - looks like something from Liberty or an independent florist.
Look around your house, is there anything that could be re-gifted? Also, do you have any gifts hidden away that you’ve bought earlier on or for another occasion that you could give now instead? The same goes for wrapping paper and cards.
Poundland have some beautiful wrapping paper this year, and some good boxed cards. They also sometimes have some good books and DVD’s, as well as nice little arts and crafts items for giving as children’s gifts.
You could also visit B&Q and tear off lengths of beautiful wallpapers and wrap gifts in these.
If you’re interested in any projects I’ve mentioned, let me know and I’ll send links to online pages.
Best wishes.