Budget friendly ideas 7yo boy?

[frazzledbasket]

Up to £15 if possible.

He's bright, likes Lego and things that need assembling.
Also good at and likes maths.

Any suggestions of what's usually good for that age group would be really appreciated.

Have a look at the Argos 2 for £15 deal. There are some good toys:
Lego www.argos.co.uk/product/8936334
Knex www.argos.co.uk/product/9300914
Radio controlled car www.argos.co.uk/product/8863232

Fossil set - my son 6,l oves rocks and gems?
You could get samples and booklet and or hammer
Ebay has great specimens sold singularly to spark interest?

I really recommend Power Tracks. It’s a robot that teaches the basics of coding. We got it for our DS a couple of years ago. It was £30 then but I’ve just checked Amazon and it’s £15.92 now. (Sorry I know some people are anti Amazon). DS loves it and plays with it for a good hour or so at a time.