StickyNote - my ds1 was just like this at this age, and I picked up a fantastic tip from mumsnet ... it was a couple of years ago, and I can't remember who it was, so can't credit anyone.
A BUSY BOX. On a set of small cards write, draw pictures, or cut out pictures of activities:
playdough, drawing, trainset, duplo, cooking, look at books, play on trike, go to the park, do a jigsaw, watch a video, play on computer, go swimming etc. And put these into a decorated box. I used three different colours of cards:
- Activities for him to do alone
- Activities for him to do together with ds2
- Activities for them to do together with me.
Then when he needed some guidance as to what to do, he got to choose an activity from the busy box. I might say to him - you can choose a 'green' card now whilst I get some jobs done, then you can choose a 'red' one for us to do together after lunch ...
This transformed our holidays, and also reminded them of lots of toys and games that sometimes lay forgotten.
Btw it is definitely a personality-type - ds1 is like this, ds2 isn't. Ds2 would happily play in the garden on his own for 2 hrs at a time when he was just 2 yrs old. At age 5 DS1 couldn't amuse himself for more than 20 mins without some adult interaction, and even now (just 7) would always choose to be one-to-one with an adult given the option.
HTH