Seed mosaics are excellent activities for when it is too hot/cold/wet to be outside. Have a look in your pantry for any dried seeds you might have: beans, peas, rice, corn etc. Their diverse colours make them perfect for a small mosaic. Draw and then cut out a shape from an old cardboard box. In this case it is a heart, as it is Valentine’s Day tomorrow, but it could be whatever shape you like. I’ve punched a hole so that it can be hung up when it is dry.
Use PVA glue and a paintbrush to carefully glue the seeds onto the cardboard, then leave to dry. Thread a piece of string or ribbon through the hole for hanging. They look great hung indoors or out, although if you hang them outside birds will probably peck the seeds off!