Uniforms
Scouts are expected to wear their uniform top for pack meetings, den meetings, and other scouting events. Lots of kids wear their hats and neckerchiefs as well. Most kids in Pack 36 do not wear uniform bottoms.
Uniforms and scout handbooks are available online at the scout shop or at one of the nearby physical scout shop locations (Palo Alto, Foster City - a larger store). Call ahead if you're making a trip to the physical store to confirm inventory - it's sometimes spotty. If you're placing an online order it would be a nice service to your den to coordinate with other parents, which also gets you above the $125 threshold for free shipping. The pack asks that parents turn in uniform parts they no longer need, so we usually have a few hand-me-downs to distribute.
See here for more information about uniforms. This Scout Shop Uniform Builder tool is also helpful, although sometimes it doesn't include all available options (e.g. there is no size medium shirt, but if you search for medium shirt across the website you'll find one). Your scout will need:
Cub Scout short-sleeve shirt - generally a good idea to buy a bit larger than you need so it can be worn for several years. Note that kinders wear a Lion t-shirt, first through fourth graders wear navy button-up shirts, and fifth graders wear tan button-ups.
Hat (e.g.), neckerchief (e.g.), and neckerchief slide (e.g.) (see here for each den's assigned color/emblem).
The Cub Scout Uniform Belt is optional but nice to have for Lions through Bears so your scout can wear the belt loops they earn over the course of the year. Webelos earn pins rather than belt loops, so the belt is less important for them.
Patches: Tigers through Webelos (1st through 4th grade)
Patches: Tigers through Arrow of Light (1st through 5th grade)
Arrow of Light
Webelos colors (the little tassel things on a pin that go on the shoulder)
Handbook (e.g.) (This is less critical for younger scouts. Ask your den leader whether they want your child to have one.)
Badge Magic adhesives are handy if you want to avoid sewing all of the badges/insignias on, but keep in mind that it's nearly impossible to remove Badge Magic adhesive. Uniforms that have had badges attached in this way cannot be handed down to younger scouts as they have large adhesive spots on the front where rank badges used to be. Consider hand sewing at least your rank patches (Lion, Tiger, Wolf, etc.) on if you don't have a sewing machine or taking them to a dry cleaner to be sewn on.