You make a canoe. Then you can customize it (i.e build on it) to make some more space to carry stuff(currently only one spot), or customize it to add a fishing trap to the back so has chances of collecting fish as you travel (the trap slows the canoe down of course), or add big guns for warfare (although technically you can shoot from the canoe, this ud be fun as you ud not waste inventory space on gunpowder and bullets).
Another example, customize your stove so it has an in built oven, or something like that. (the fact that a pot goes over the fireplace ud count as customization).
You could customize you cart so that it can be used to pull ppl round (total S&M

You customize your braziers too add a seat so that a player can use it to aim and shoot.
You customize your pilgrim's hovel so that you have a basement, maybe an extension, maybe another floor, maybe an attached greenhouse. (or a bathroom, or a jacuzzi anything)
you customize you walls so that it has barbed wires that drain health (slightly) every time some1 tries to break it (damn this ud actually mean thorns ud have another use).
You could customize trees to have tree houses or nets to capture birds and moths.
You could customize your fields so that you could add water in it that decreases growth time.
You could customize boxes and lace them with traps, or secret inner compartments.
you could customize your sawbuck so that it is mechanical and produces boards faster (or like stamp mill, automatic)
you could customize you rifle/ guns to increase their range (is this a thing?)
you could customize your gardening pots to have compartments for worms (earthworms are good for potted plants, if left empty, could get could get infected by slugs that slow down the produce of the pot)
you could customize your timbre pile to protect it from rain/ elements so that it doesn't have to placed far away from other structures.
These are just few things
