I went through the hot/recent posts and tried to pull out things that might be helped by a boots on the ground in DC. Check out the links to Voat threads and also look at the comments. Sorry this is so much info; just pick and choose what you can do that is safe and that you believe is relevant. Some of what I listed may be dead ends or may just give you ideas. Any time you can provide pictures and/or videos of places (preferably uncut videos to reduce any bait and switch suspicion) is helpful. Also maybe you have access to files that would help us find locations of certain vague places that have been referenced (as noted below).

enough rambling, here's my Washington DC Voat post collection:

Connecting buildings and their purposes in DC: https://voat.co/v/pizzagate/1547234 (where is The Stable? Still need to find this)

The Farm: https://voat.co/v/pizzagate/1546920 (training center in Virginia at one time. Is there anything similar in the grater DC area. Maybe you could use keywords in databases you have access to based on this post)

Pegasus Museum: https://voat.co/v/pizzagate/1555511 (owner change) https://voat.co/v/pizzagate/1554204 (connects Pegasus with other area locations as a "one stop shop" for child trafficking) https://voat.co/v/pizzagate/1546534 (museum is directly above active subway tunnels: is there an access point?) https://voat.co/v/pizzagate/1543972 (was this construction done with a permit?)

Tom's Creek Farm/Pig Farm? https://voat.co/v/pizzagate/1547634 (looking for more info on this)

Bloombars Art Organization: https://voat.co/v/pizzagate/1555573 (possible pedo hang out)

Tunnels in DC: https://voat.co/v/pizzagate/1551878 (tunnels seem to connect strategic locations) https://voat.co/v/pizzagate/1554282 (more context to the tunnels and their importance) https://voat.co/v/pizzagate/1550125 (map references, National Geographic reference in comments too) https://voat.co/v/pizzagate/1551092 (P Street tunnels, Tenderloin district also has tunnels, some tunnels connect to Rock Creek Park as well.

Rock Creek: https://voat.co/v/pizzagate/1555209 (church and mansion with some odd connections that need more fleshing out)

Some vague celebration by The Apes in DC: https://voat.co/v/pizzagate/1553364 (would be helpful to figure out where this is or what it is. Read the comments. May be at Rock Creek Park?)

Chesapeake St. NW Old building: https://voat.co/v/pizzagate/1554568 ("kid" word spray painted by a boarded door. Is it still there? Can we get current pictures of the area? Comments below post are helpful too with more leads)

CIA operatives are peppered all in the area: https://voat.co/v/pizzagate/1548634 (the Maccobys are a family to look into and they have a business, The Maccoby Group, right down from Comet Ping Pong)

Boats as transportation: https://voat.co/v/pizzagate/1478968 (can look into docks on the Potomac river too. People watching on an evening stroll may yield something of interest...)