Last year I got a deal on M&D architectural unit blocks on Amazon around Christmas. They are still in my gift closet and I'm wondering when I should give them to DD. I know blocks can be enjoyed at lots of ages, but I'm wondering when your DC was most into them? We pretty much have all the Christmas gifts for DD for this year, so I don't necessarily have to give them to her now (she is 2.5). So, the options are: give them to her now (age 2.5), wait until her birthday in the early summer (age 3) or even wait until next Christmas (age 3.5)? Any thoughts? Thanks!