well done to your ds on crawling, dd was the same when she first started crawling, does he like music, i used to play music alot at this age, dd and ours, dd like a walker (a bike really) at this age, she would walk on her knees, she did crawl at 6ish months, we went to music classes once i week and how she loved this, she had a small table that had all these fancy things for dd to do this amused her for most of the day, our best buys at this age, i remember a similar post going around last year so maybe everyone will share activities here,