There's a time for every dog toy, and that's how you can get the most out of them! Just like how you're more likely to play a board game when you're feeling at ease and mellow, most toys that dogs can play with on their own are best provided when their mind is feeling relaxed, from other activities with you.
Especially toys like Kongs, puzzles and treat dispensers, I see them acting similarly to a baby's pacifier as they settle into nap time. This will help ensure that your dog is engaged with the toy in question and also help prevent them from overly chewing or destroying it.
This treat dispenser is the Tricky Treat ball and is hands down one of my favourites!