If you're thinking ahead to storage for after Christmas these Really Useful 3 x 35 Litre Plastic Storage Boxes are a super bargain at Amazon, as they're down to just £22.40 delivered! That makes them just £7.46 each, and for such a large storage box that's a cracking price!
I bought two sets of these storage boxes when they were on offer last January and they have been brilliant. I used mine for the Christmas decorations and some for the kids toys too, and I would definitely recommend them.
They're a really good size at 370 x 310 x 280 (length x width x depth in mm) internally, so you can fit plenty of toys and clutter inside. The lids have a secure clip, and they're sturdy enough that you can stack them in top of each other with the lids, or inside each other when they're empty.
These are clear plastic, so you can see what's inside at a glance, making it much easier to find what you're looking for!
There's free delivery even if you're not a Prime member, as these are over the £20 minimum spend.