One way of practising German grammar is by choosing a German text - any text (I took a few lines from a children's story which I found online) - and look for whatever you have just learned.
This project is one idea for practising regular German verbs. As you can see, I have highlighted those in the text and written next to it how I spotted them. There are more verbs in that text which I didn't highlight. Those aren't regular verbs, so they could be highlighted when you want to practise irregular verbs.
I also just found this meme on Pinterest. Can you find the regular verbs?