Busy Board for Toddlers DIY Ideas

After looking at all these super cute busy board ideas, I've decided to collect some of my own ideas for my little guy.  Which do you like best?

I LOVE the bright yellow board on this homemade activity board.  Looks easy enough to make - and perfect for my little guy!

This activity board is cute too - love the orange.  I just think it needs... more stuff.

This is a GREAT latch board - would keep him busy for hours!

This sensory board below is pretty awesome as well.  Love that they added magnet/magnetic activities to this busy board.