Mono Monday: tight

Thanks to Laurie for the theme. Here is my grandson playing with some K'nex (another Shelter shop find).  The pieces fit together tightly so that all sorts of interesting shapes can be made. Though, as I blip, he's moved on to Lego. 

It's a busy day ahead here. Once my grandson goes home at bedtime I have a fundraising meeting to attend. Fortunately for me I can do it remotely.