If I could pick one area of weakness with my kids, I would definitely say verbs. There's only so many conjugating worksheets you can do, but games with verbs are hard to come by.
Then it hit me. Spoons.
It is played like the game spoons. Here are the rules if you are unfamiliar with it. However, using the printer in the office, I created my own decks of cards. Each card has a verb on it...either the infinitive or a conjugation (je, tu, il/elle, nous, vous, ils/elles) but WITHOUT the subject.
I came up with two different ways kids could make a set of four. They could get four different versions of the same verb (for example: portons, porte, porter, portes) OR get four different verbs in the same conjugation (for example: suis, ai, vais, fais [the first person singular of four different verbs]). I found that both worked GREAT and they had so much fun with it. It happened to be nice outside so we took the game outside. If you don't have spoons, any objects will do. I used markers and it worked just fine.
To help them get MORE practice, if they are "out", I require them to still play. They just cannot grab a spoon.