SIL came over yesterday with her two DDs (18mo and 6mo)
Her DD1 is very lively and got hold of DS2's tool bench (DS2 is 2)
She was pushing it all around the sitting room - into DS2, into the dogs, into the paintwork, into the plasma TV and into my legs.
When DH told her not to, SIL said that she shouldn't be stopped as 'pushing' was one of her 'schemers'
Apparently it follows on from building and pulling - it's a developmental stage 
She also asked me if she could have one of my wooden curtain rings. Apparently it is one of the 105 key items needed for a 'sensory basket'. This basket is a necessity for a child's development.
AIBU because I don't know or care what these things are? Am I seriosly disadvantaging DS2? Is DS1 (12) destined for failure in life because he was denied these things?