I recently wrote an article for SpanglishBaby on a mini-book activity that my students really enjoy. It is very simple and works well with Spanish language learners at different levels. You can read about the activity and download printable mini-books here:

This Spanish song about spring is from Los pimpollos, an educational television program from Peru. There is an official YouTube channel where you can hear lots of other educational songs from Los pimpollos.
This song, La primavera, uses lots of spring vocabulary as it describes what happens in la primera estación. Each of the spring nouns is associated with a verb, so kids are learning to express complete ideas: se abre la flor, se ponen verdes las plantas, ilumina el sol, cantan los pajaritos.

Mar y tierra is a traditional playground game. It is very simple and it can be played inside if you have enough space and do not mind the jumping. Traditionally, kids jump between two spaces designated mar and tierra. Since it is almost Easter, you can make the kids conejitos and designate the two spaces bosque or campo and jardín.