This first idea I love because they did it in Florida . .. where there is no snow! This idea comes from Mom to 2 Posh Lil Divas and she shares a totally awesome Snowman Experiment using giant ice balls. I think that, here in Michigan, this would actually be fun to do in the middle of summer :-)
Homeschool Creations created some really neat printables to tie in with the book "The Mitten". I love this story and look forward to using these with the boys.
This is another great science idea that uses TP Tubes and marbles :-) The idea is shared over at So Here's My Life - such a great thinking idea for the whole family :-)
That's all for today - I ran out of time to search out tons of ideas :-)