Posted this on the 'Chat' board yesterday, but thought I'd repost here in case any of you lovely lot has any tips 
Ds1 is going to a friend's house after school & DS3 will be in nursery till 4.30, so I am taking the opportunity to invite a friend round for DS2 for an hour or so. It will be the first time he's had a friend here without the parents also present.
They are in Reception, DS is nearly 5 & probably has autism but no diagnosis. School are aware of this playdate & think it's a good idea so he can start to connect with other DC on a 1:1 basis. They have known each other since last September (& I know the mum a bit) although DS doesn't really play with other children (but is happy to be around them). The other family only live across the road so easy to drop other child home afterwards/if things go wrong.
What should I do with them? We have probably an hour & a quarter, so I was thinking get in, snack & drink, then maybe Play Doh (with me pottering in the room), then a game e.g. pop up pirate, Ker Plunk. Then have Duplo out if time to spare.
I'm so nervous about this it's silly 