Oh Santosha, your DD's comment is priceless!

FWIW, I call my mum, or beg DH to take the day off! If those things don't work, we do whatever DS's favourite activity of the moment is, usually while I'm lying on the floor with a pillow next to him and countdown the minutes until nap time! I also second the comment that it's worth the little bit of extra effort to set up an activity, as it can entertain DS far longer than getting him to 'play on his own'. I have a shoebox full of bits and pieces (bits of fabric, wool, coloured paper, ribbons, stickers, leaves, seeds, lids etc) that I give to DS, then stick a piece of contact on a wall or window (sticky side out) and tell him to go for it. Works a treat, no sticky mess (but lots of little things to pick up later!)! DS also loves play dough. Putting on some music works for a bit too, as does giving him the iPad or putting on his favourite DVD!

If I tell DS I'm not feeling well and need to play lying down, he's usually appropriately concerned and will often lie next to me and stroke or cuddle me!