The pizza wheel I have is nothing fancy, just an inexpensive one. The scissors are from Ikea - they do sets of three (two small and one large) for next to nothing and I stocked up when still in the UK.
I use these cutting tools probably as often as I use my knives because sometimes they just work better! If you have young children who need their food cut up for them you need a pizza wheel and scissors.
Pizza wheel

- Use it to cut toast before putting your baked beans and grated cheese on top. Then just grab a fork and go for it, no knife needed.
- Great for dicing thick slices of ham.
- Cut up your pancakes before drizzling syrup over.
- Slice through quesadillas with no fuss.
- Go back and forth with your pizza wheel over herbs on a cutting board to cut them up.
- Roll over slices of cheese to dice it up.

- Dice bread for croutons or to feed the ducks.
- Slice pizza with scissors to avoid scratching your pans - and easily get right to the edge too.
- Cut up waffles - I cut mine into quarters before freezing as they fit into the toaster better that way.
- Put fresh herbs into a little cup and snip them up with scissors.
- Cut toast into strips or quarters.
- Scissors are perfect for dicing bacon (cooked or uncooked).
- Snip up your cooked chicken for sandwiches, soup or salads.
- Cut up spring onions (green onions / scallions) or chives with scissors.