My son a daughter in law are moving back closer to home after living at the opposite end of the UK for the last few years 

We've arranged that the grandchildren will stay with us for a night most weeks and so I'd like to get some things in for them to keep them occupied and so they feel at home when they're here.
They are 2, 4, 7 and 8 and they've another due imminently.
My list so far is
- Arts and Crafts supplies
- Lego
- Outdoor games like rounders and skittles
- Paddling pool
- Toy cars and garage
- Tent and Tunnel
- Puzzles
- Books
- Soft toys
I'd also like to get (with dil's permission) a travel cot and cheapish pushchair for the baby, although I'm aware they're not likely to be staying for at least a wee while.
Critique or suggestions either for specific products or just general ideas would be very much appreciated 