So you buy a nice two shelf bookcase but it’s wobbly and you know it won’t hold much. I’ve recently gotten one and my solution was to put L-brackets on it. After installing about 8 of these brackets at the cojoining parts of the shelving, it is now completely stable and ready for use.
Empty the lint trap on your dryer every time you use it.
If you have a dishwasher make sure there is no food clogging the drain every now and then.
Once a year, clean out the actual vent from the dryer to outside. The lint filter doesn’t catch everything.