Cleaning saw blades.

To easily clean the gummy buildup on saw blades, spray the blade with oven cleaner. I use the foaming type in a can.( Your wife should have some in the kitchen somewhere!) Let the sprayed blade rest a while until the resin buildup lifts, then rinse under a tap. You won’t believe the difference it makes. Feels like you fitted a new blade.

Sliding inside measuring sticks.

Next time you work with tongue-and-groove planks, rip off some sticks about 10mm thick from each side of the plank, with the joint profile on one side. Put the two sticks together so the tongue sits inside the groove. You now have a sliding measuring stick that can take inside measurements accurately. The measurement can be registered by marking across both stick with a pencil or by clamping the two sticks together with a small C-clamp. This measuring stick is especially useful for checking a door opening for consistent width from top to bottom.

Depth-stop for backsaw.

This adjustable depth-stop for a backsaw helps in cutting accurately to a specific depth, for instance half-lap joints. The idea is adapted from an antique saw. The stop is two lengths of 10 mm steel bar a little longer than the length of the saw blade. Holes are drilled through both bars at each end and fitted with bolts to tighten the stop on the blade at the desired setting. I think you could also make the two bars from wood if they were slightly crowned in the middle to clamp the entire blade length when tightened. If I have only a few half-laps or dados to cut, I nearly always use this saw. It’s easier and quicker than setting up the table saw.