We recently got N a sand and water table and he has been really enjoying it so far - but not with sand and water! I will get round to using it for that purpose eventually, but for now we are using it for slightly less messy indoor fun.
After a huge purge of years worth of bank statements and payslips, I was on my way to the recycle bin with a bag of shredded paper when I realised it might have another use. So I emptied it all into the sand and water table and buried a load of farm animals in there. I added a couple of scooping/stirring implements, and that was that - a new activity for N.
I showed him how to dig with the wooden spoons or with his hands to find the animals. Each time one of us finds one, I name the animal (several times over...repetition really is a key tool for learning language) and make the corresponding animal noise. Sometimes I sing Old McDonald for him, holding up the right animal for each verse, but this gets tedious quite fast (for me, not for him - he will happily have me do this on loop for ages).
Now that he knows this activity is all set up for him, he toddles over there on his own and searches for the animals, then brings them to me to name for him. Sometimes he prefers to just stand there and spoon all of the paper onto the floor. Then we get the dustpan and brush and sweep it back up again...all part of the fun for him!
Obviously you don't need a sand and water table for this - you can use a bucket or a washing up bowl, or even a cardboard box. Whatever you have to hand. And farm animals are just one option - I can think of lots of other toys I could hide in here to change things up a bit.