I got my Godson a MegaBloks set that is like the small Lego, you can make something like a police car and fire truck or something like that. It was around $15 I think. The bricks are the same size as Lego and can be used together.
Jen - Mom to two December 12 babies
Nathaniel 12/12/06 and Addison 12/12/08
Re: Need a gift for a 6 year old boy...
https://www.amazon.com/Real-Construction-37988-Tool-Chest/dp/B004WNAB3W/ref=br_lf_m_1000755891_1_11_ttl?ie=UTF8&m=ATVPDKIKX0DER&s=toys-and-games&pf_rd_p=1337624422&pf_rd_s=center-2&pf_rd_t=1401&pf_rd_i=1000755891&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=0F091AH8JFG35T4ASJZ8
Amazon has the Real Construction tool chest for $11.99
I got my nephew Perfection (remember that game?) for his birthday. All the kids LOVE it! They all enjoyed it so much, I put it on TB's wishlist.
https://www.amazon.com/Milton-Bradley-4060-S5-Perfection/dp/B00000IWHG
Dang... it's $20 now. It was less than $10 when I bought it. That, or Guess Who? ML and TB play it all the time.