I should have done this before deer season was upon us, but I didn't get around to doing it, although I thought about it several weeks ago. Here are some of my tips, but I'm sure you have some better ones to add.

Wifes old purse may make a good possibles bag.

A wooden dowel from the crafts section of store makes a good ramrod. Use the largest size you can that will easily fit in your barrel.
Attach safety pins to possibles bag as emergency nipple pick.

Make your own pre-soaked swabbing patches: Use a short stubby glass or plastic bottle--place the appropriate size patches in the bottle and cover with your favorite cleaning fluid.

1.5 to 2 oz plastic container (like foot powder comes in) makes good powder cask for your possibles bag.

Make a starter rod with a golf ball and short section of wooden dowel. Drill a hole in the golf ball (not all the way through) and glue in the dowel. Use a countersink or drill bit to make a bullet guide on one end of the rod.

Make your own targets using your computer and desktop publishing program. You can make your own 1/2" or 1" grid to aid in sighting in. Using your imagination you can come up with targets you like better than commercial one. Print on your printer.

Red C.
Everything I say is fully substantiated by my own opinion.

I've used a 2219 aluminum arrow for a ramrod several times in a pinch. The fletching doesn't fair to good after being shot over but still makes a fair ramrod.

Tape over the end of the barrel doesn't hurt either.

God Bless, Louis

Good "covers" and snap caps as well for nipples are as near as the auto parts or hardware store. If you visit one of those pull your own parts junk yards you can get a lifetime supply. Its the little rubber caps they use to plug tubing on car engines. I use them over the cap in wet weather and anytime the cap needs to be off, like in a vehicle. I like the ones that fit snuggly over the base of the nipple, probably 1/4 or 5/16.

Valve stem caps make good nipple covers.
At the range shoot with out swabing between shots to see when your groups start going south.
good Idea to also at the range test any type of cover you use over the muzzle during wet weather.
Bald faced hornets nest makes a good filler between the powder and bullet/sabot/patched round ball. soaks up extra patch lube.

Al

Keep your flint sharp and use 3F power in the pan.

Use Ultra Bore Coat. The gun will load easier and clean easier. It eliminates the crud ring.

Use BH-209 powder. Its only downside is you must use regular 209 primers.

Use windshield washer fluid to swab. It won't freeze.

When hunting for more than one day in cold weather never bring your muzzlelloader into a warm building at the end of the day. Moisture condensation will wet your powder. I leave mine in the case in my unheated garage.

Also, keep electrical tape over the end of your barrel when hunting in snow. That way you never have to wonder if you got any snow inside your barrel.