DH is back at work today, as am I. I work for just less than 3 hours on a lunch time.
My children normally come with me during school holidays.
If you have any judgements to make, it's best to wait until you are out of their earshot to speak them because if they get the tiniest inkling you might purchase them some sweets, they will act accordingly.
And as for feeling sorry for them, really? I mean really? The two children who had a laptop and a tablet and some colouring pens and books and cross stitch between them? You feel sorry for them? The children who have access to the park just a few doors down, those children? The ones who could have called for any number of friends who live locally but chose not to.
Yes, they could have been "sat watching telly at home or playing with their new toys" like you explained to your daughter when she asked why you felt sorry for them, but they could also have done that from my workplace, they have internet access and Sky Go, Netflix and LoveFilm. The older child is allowed the key to go home and fetch toys. We live about 30 seconds away. Had you bothered speaking to them before declaring how sorry for them you were, they might have mentioned this to you.
They do thank you for the sweets though, they have added them to the box of sweets nice customers have been buying them all week, normally they have to assist with bags/doors, sing carols or read stories to toddlers to earn sweets, they were pleasantly surprised when they got some simply for playing sleeping lions.