Here's grammar guide that gathers all subject, object and possessive pronouns in one place. It includes a simple sentence that shows pronouns in their usual places, a pronouns chart and two empty blocks for example sentences and important notes that you need to highlight in pronouns.
This PDF set has three versions. The first one is the complete grammar guide, which can be used as a grammar reference point by learners. The second one is the semi-filled version, which is appropriate for classroom use as a revision activity. The last one is ideal for a presenting and dictating all the pronouns in one worksheet.